Ask machining questions, post machining failures.CAD CAM talkSpeeds and feeds guessingG-Code, M-Code, Bro-CodeFanuc vs HaasBitch about payIgnore SiegWhine about spline shaftsButton pushers who think they're machinistsPrevious: >>2849288
giwtwm
>>2872376The fact that her hair isn't tied up induces rage in me.I'm probably going to be working in an EDM shop soon, so if anyone has info on machining graphite or using jig and surface grinders, I'd appreciate it.
>>2872376There is more than fanuc and haas, Mitsubishi also is in the game and siemans is like top dawg Fanuc and haas are beta boy tier
>>2872601>machining graphiteI've done a little machining of it over the years, it's dirty and abrasive as hell on tooling, it does machine nice though
>2872674>Fanuc and haas are beta boy tier
>>2872601>>2872690I live in an overwhelmingly agricultural area and over the years I have found a few large (like 1.25" diameter) chunks of graphite 6-8 inches long. Some of them just turned up on the farm in random places (usually where one of several old homestead used to be located.) One of them even looked like a 6 spline PTO shaft. WTF were they using them for? I know these fuckers weren't EDM machining!
>>2872674>siemans is like top dawgEvery Siemens controller I've ever used has been a giant piece of shit that doesn't work properly.>Fanuc and haas are beta boy tierBig talk from someone with shit experience that has to dig through a regrind box for tools.
>>2872779>implying those were reground They were dull just less dull than the shit we had a available in the ER collets
picked this up to learn on what should I expect?
>>2872881Expect to disassemble a lot of shit and clean it up...
>>2872881Did you pull that out of the ocean?
>>2872888out of someones yard
>>2872889I see a lot of penetrating oil and scotchbrite in your future, good luck.
>>2872881Our work had a lathe in that condition. It wasn’t worth repair and we would do Mickey Mouse shit like bypassing relays/step down transformers and hard wiring it to a 480v to get it to run a bit longer
>>2872881>>2872889Did the guy who sold/gave you that lathe live in a pineapple shaped house by any chance?Better hope the evaporust pool isn't closed.
>>2873294it was under a tarp its mostly surface rustI also cant find a manual for it online sharp still makes several 1640 models but they look different
>>2873420>I also cant find a manual for it onlineYou don't really need them except for parts diagrams. Engine lathes all work 99% the same, couple handles for RPM, couple handles for feedrate/TPI, forward/reverse for the feed, handle to activate feed or if you're lucky, two, one to throw the half nut for threading. Only time you're fucked is if the chart plaques are gone/scrubbed down.
>>2873420>manual Manuals are valuable worth several hundred dollars each, I use them all the time to look up manufacturer part numbers rather than pay machine builder up charges for work a lot It’s not a Nintendo switch they aren’t just going to give you manuals for free
>>2873490>It’s not a Nintendo switch they aren’t just going to give you manuals for freeThey literally do though. Any half reputable machine builder will email you a PDF manual if they have it, if you give them a serial number.
>>2873294>Better hope the evaporust pool isn't closed.This is supposed to be a recipe for evaporust... Haven't tried it myself yet, but I did make this picture in paint and saved it to my computer for future reference... Should probably print it out, laminate it, and stick it on a wall in the shop sometime so I can find it easily when I do inevitably need it.
>>2873494The only ones that are free are like fanuc operator control books The electrical diags, parts codes and all the good shit costs money. We paid dmg mori for books just the other day
>>2873498That's basically saying "use partially neutralized citric acid". Which is functionally just a weak acid. Could get away with using concentrated vinegar, as it would probably lead to a comparable pH.
>>2873517Why do you just constantly make shit up?
>>2873545Costs money to download it dumbfuck Next you’re going to say cnc parts are cheap when it says “call us for price quote” on a switchIt’s literally my job to call these places and pay them for books when machines go down and we dk t have them for whatever reason
>>2873580It's a free account, retard.
>>2873545This is in the OP, you will save yourself a lot of frustration by following it.
>>2873627Download it then
>>2873498IIRC weak acids can be harmful because while they'll remove rust, once the rust is gone they'll remove metals. If you forget to fish a small spring out a couple weeks later it might be gone.https://youtu.be/fVYZmeReKKY?si=nZYW16w3bq6aggXW This Italian gunsmith claims his mixture is a cheating agent, similar to evaporust, which will remove rust but not metal.I should try this out, I've always been hesitant to bathe cast Iron tools, since cast iron is supposed to be slightly porous I worry it might absorb acids and become brittle over time or something.
Did any of you guys learn CAD on your own time or was it something you went to school for or learned on the job?
>>2873912I learned CAD in my free time. In my experience, the basic principles of how to use CAD are actually pretty easy, it's mostly just learning how to use your software. I was able to make reasonably complex models after about a week of watching tutorials and messing around in my afternoons.
>>2873912I learned it in college however, I am not an engineer. CAD is less than 1% of my job. I’m mostly on CAM software, editing code, rewriting some ducked up bullshit that some kid before me wrote, or setting up machines And since newbie kids don’t want to enter this trade for minimum wage when McDonald’s pays more I have to operate the parts I programmed Back in the day there would be 2-3 guys in my position and like 10 button pressing part loading operators
>get associates degree of arts>enjoy the machining and welding course I took>pursue a career in machining>start a new job a month ago>machining 2000lb parts into pieces of an excavator >create the cad models and programs too>people ask me all the time if I went to school for machining >tell them I have an AA degree>they look at me like I'm a faggot
>>2874321I have a Bachelors of Arts and people in machine shops go “oh shut why are you here” Ugh because literally everyone under 40 has one and it’s basically a high school diploma now???
I saw a boy mill get his swarf hole all backed up and he had a coolant sissygasm all over the floor today
Where would you guys go to sell a bunch of milling machine stuff like cutterheads, alligator clamps etc? Ebay? I inherited a ton and I'm not machinist.
>>2874507Ebay or Practical Machinist forum, they have a for sale section.https://www.practicalmachinist.com/forum/
Fun fact: 1mph is ~1000"/min (1056).
>>2874900It looks so much faster than that when I rapid into my part
>>2874968Well that's still about a foot and a half a second.
>>2874968lol
>>2874507Clamps, t nuts, used drills, reamers and endmills sell for less than scrap. You’d be better off just scraping it because some boomer machinist will be like heh son I’ll give you$20 for the bucket of cutters Sort out everything carbide, you’ll make more money recycling the carbide for scrap Don’t go to a scrap yard call a tooling company and ask for “buyback value”
>>2873517>The only ones that are free are like fanuc operator control booksI was reading through the Fanuc 16i operator manual and it feels like they were just making up the functions as they went along.I get the feeling that Fanuc were the first ones to get into CNC and are stuck for backwards compatibility reasons while Haas and Okuma came after and simplified their ideas. Restarting in the middle of a program is good example. Does anyone really understand the whole P-type and the other type restarts in Fanuc? We just use a goto after the variables are loaded in.
>>2875067>Clamps, t nuts, used drills, reamers and endmills sell for less than scrap.Depends on the market. I know of a guy that sold those flange nuts and t-slot nuts on e-bay piecemeal and they brought quite a bit of money from guys that just needed a few of them. But if you're trying to sell a bucket full of them at an auction, yeah they're not going to bring much at all... Unfucked carbide blanks and inserts would sell on e-bay too. If I didn't want to fuck with e-bay's bullshit I would throw them on facespace marketplace as a lot and try to unload them quickly for a reasonable price.
>>2872601>machining graphitehated that, and cuprographite or whatever is called in english even moreits really easy to machine, kill the tools superfast as >>2872690 says. But the most important part is to try to avoid the mess it makes seriously, the powder is terrible, gets everyfuckingwhere>>2872881i can attest that this works >>2873498 >>2873909 , take care of protecting it afterwards as the metal rust again fast>>2873543the effect is supposed to be in the citric part, not the acid
>>2874548Thank you>>2875067Haven't a fucking clue what I'm looking at but a lot of the drill bits are massive, the milling machine itself has a huge vise on it. The most expensive looking stuff is all marked NITTO-KOHKI, OSG/SOSSNER and a lot of it seems to be relatively brand new.I'm a weld monkey not a machinist unfortunately.
Every now and then i get the usual 3d printed CNC router, or sometimes mill on YouTube. Of course they all can cut aluminium with open mouth reaction included and then it looks like right of pic rel. My question is what is needed to make actual good looking Aluminium parts, more rigidity, better drills, specific finishing techniques?I don't plan to get into machining, just interest by a 3dpg fag. And yes, i asked chatgpt and it went full retard saying 3d printed CNCs are able to produce "acceptable" aluminium pieces.
>>2875694your picrel is an annular cutter
>>2875704Thanks, there are quite a few of them. I'll need to look up all the different types and make a damn spreadsheet.
>>2875700>what is needed to make actual good looking Aluminium partsFor a finish cut, you don't actually need that rigid a machine. The cutting forces are pretty low when you're only taking a 0.001-0.002" chip with a small-ish cutter. Stiffness and damping certainly help, though. A good machine with good, material-specific tooling can make roughing cuts that can pass for finish.But the most important things, for aluminum, is razor-sharp, high-rake tooling and cutting fluid. Feed/speed, too, I guess, but that's always important.
>>2875694Disregard Sieg; he is retarded.What's worth selling is going to depend heavily on what you have. Any cutter of any kind in like-new condition will sell. They're consumables, and always in demand, even by hobbyists. Note that "like new" doesn't mean "looks good". You'd need to take a good look at the cutting edges (ideally with a low-power microscope) and see if they're sharp and free of chipping.Large cutters (like 1"+) will sell alright in decent condition (edges can't be dull, but they don't have to be new). Insert holders, depending on what they are and who made them, should also be easy to get rid of.Workholding/fixturing stuff will sell in pretty much any condition if priced accordingly. Oddball stuff like collets and adapters are too specific to generalize on. Hardinge R8 collets can be sold in fairly shitty condition for the same price as a new set of no-name Chinese collets, for example.NGL, though, the background in your pic doesn't inspire confidence. End mills just stored loose, bumping against each other, ruins them in short order. Never even mind the rust. If I were you, I'd see if I had any friends who did machine work. Ideally a serious hobbyist, as that's also the type you'd likely be selling most of it to. They could help you go price it if you wanted to sell it piecemeal. Otherwise, you could just say fuck it and put it on craigslist for a few thousand because I KNOW WUT I GOT.
>>2875715Okay I got a 5 gallon bucket full of fucked hss cutters you want to give me 2k for it? Shit I’ll sell hundreds of these buckets
>>2875728Yup, still retarded.
>>2875715Thanks for the in depth info, I don't got no microscope laying around so I'll probably just part them off slowly on ebay or something, atleast for the nicer expensive ones. The good stuff is all boxed up in plastic containers seperate but yeah the drawers are all filled to the brim touching edge to edge. Later before I list anything I'll grab a snapshot of everything laying down on a table, so if any of you anons see anything you want just let me know. Bridgeport is for sale too but I'm in NY State.
>>2875794Just because it’s in a plastic holder doesn’t mean it’s brand new We used to setup and tear down jobs and put the used cutters back in the clamshells at my old job many shops are like this You need to measure and inspect each Even the wax doesn’t mean it’s new old timers still do it to used cutters
>>2875709So it's more of a machines might be able, but youtubers aren't kind of case. I guess that was somewhat predictable, but thanks for your answer nonetheless. Didn't know you could actually sharpen bits (yourself), thought it's like cigar cutters.
>>2875794dude you said that you are a welder, for sure you need to know some machinists
>>2875853You can even sharpen hss end mills yourself. The tool grinders are so cheap they go less than scrap metal these days. You can’t sharpen carbide yourself. I tried even though they said not to it just gives you a shiny but dull edge So when I g83 with my dull carbide drills you can watch that spindle load climb up to like 13-20% because the boss says we’re over the tool budget for the year As long as it doesn’t hit the automatic crash detection fail safe parameter just run em dull finish sucks but rock tumbler fixes all sins
First time using a U-drill. I'm running it on soft steel and the feeds and speeds I'm using are closer to high alloy steel recommendations. I'm afraid to run it harder as the whole machine shakes even at these speeds. Should I just bring it up to full speed? It doesn't feel normal
>>2875915Use m88 will shake less
>>2875905Aren't you the guy that couldn't differentiate between mills and routers?
>>2875915>I'm afraid to run it harder as the whole machine shakes even at these speeds.If the chipload isn't right, it'll just do that, fast or slow. Figure out what the correct chipload is for your material. It should come out as Inches Per Revolution, ie, it goes down .01" each time it rotates once. Depends on the diameter, but start with something around 800RPM unless it's huge and just adjust from there.
>>2875977You mean a a piece of conduit and some skate board wheels that a YouTuber claimed was a 3d printed cnc mill?That you claimed was an awesome machine? You don’t have m88 because your “mill” is an old tire you spin by hand with 2 pieces of mystery steel brazed to it huh?
>>2875981A simple yes would've been enough. Touch some grass.
I am restoring an old benchtop drillpress, got it for almost nothing just bc the owner was retiring and the bearings were shot, already changed those ones and seems really smooth.The engine fan is broken see picrel, Why they are this weird shape instead of more fan like? should i look into something specific for a replacement? a friend ofered to 3d print one, but i dont feel confident in that it will survive
>>2875995Looks cast, just grind the broken ones to bare metal fabricate some repair pieces oh of hot roll weld and grind smooth they’re fan blades not turbocharger impellers you need a 5 axis to replicate
>>2876007man this is plastic
>>2872881to learn how to grind ways
>>2872376I had enough of my mini lathe, buying an old one from 1966 next week
>starting my first machinist job MondayWhat are some tricks I can do at the machine to impress the old heads
How do we feel about metal 3d printing? It seems neat
>>2872376Brainlet here. How can I get fusion to create a body that references curves on three different axes like this? I cannot into the loft command and it keeps telling me "sorry boss I can't do that"
>>2876148First day without major mistakes(no one does that).
>>2876148Only do what you're told, and don't get any "ideas".
How long do you expect it to take for machinists to hit different milestones? Like learning to to correctly change tool and work offsets, setting up a part, changing feeds and speeds at a machine etcI've been training this guy for 2 months now, spending 2-5 hours a day with him, and I'm starting to think he's just not gonna work out
>>2876287I went from 0 experience to doing basics setups in a day or two 15 or less tools manually touched off, edge find a work offset always g54 Editing feeds and speeds I did occasionally but would only really do it for my own programs and left other people’s work the fuck alone because that’s how you start fights
Does it help to have knowledge of welding?
>>2876567Not unless you make parts to be welded. But typically, no
>>2876567It can help if you fuck something up you can do a bunch of lap joints then cut back down to tolerance but can warp shit
>>2876287Is he just not getting things conceptually or is he just forgetting to check things? When I started out I made a checklist to look at and follow exactly (I'm pretty sure I have ADHD so I really needed that whenever I spaced out). You can try that if you haven't already. If he's taking notes and everything is written down he should be able to simplify his notes into something he can quickly go through.I attempted to train some guys I'm certain are just retarded and it didn't work out. Like he put the part in right 14 times in a row then on the last time put it in wrong and crashed. I have no idea how you fix that. As long as he's not doing things that are obviously retarded maybe you can fix that.
>>2876616To add, I had 2 weeks of training and didn't really feel comfortable around the machines until 6 months in.
>>2876616I replaced the other guy on the machine and it seemed like he was just too scared to do anything and would just get nothing done (probably better than crashing it, and there's the other extreme where someone's too confident in his abilities and just breaks everything). I have the problem I'm thinking I got due to being night shift and having no one to ask for help that I'll overengineer a solution that was unnecessary but everything turns out ok in the end so I don't make scrap at least.
>>2876616Oh I found my checklist. Yeah something like this you can fold over and have all essential information plus all things that need to be checked.
>>2876643I should probably clarify that those aren't the real speeds for a drill just the ones for the diameters I was working with. We used to break spade drill bits all the time but once I started using that equation I never broke a drill insert. Also the G55Z equation is very specific to the machine I was using. Dunno why the drill depth was less than the tap depth that was for through-holes but it worked and I never got fired at least.
>>2876656I'm a 2-axis fanuc lathe specialist I swear! Worked on them all (Fanuc, Okuma, and Haas). I know how to set up grooving tools within a thou from setup.
>>2876658Never used a cnc lathe, now I have to source parts for mill turns, I’m a haas mill guy and first thing they show me is a brand new dmg mori mill turn and tell me to sell it/get tool holders for it Put chucks on it, install the draw nut/make one for a customer Those higher end machines really blow Haas out of the water… I didn’t realize how Mickey Mouse I was doing everything
Hi lads,I have access to a Luyoung Small CNC Lathe Machine CK0640.The problem is no one knows how to use it. I'm told it has literally never been used and it's been sitting there for years.I think this shit is cool so i wanted to have a go (i have limited 3d printing knowledge, and touched my first lathe about a week ago) and hopefully get it making at least 1 thing to show new people that come by that might be interested.I've gotten track lube working, coolant, pneumatic push/pull(3), the carriage(2) moves(though not to "machine 0", i don't think it has switches to find limits), i ran some gcode in the air but the spindle doesn't spin. The toolpost doesn't change tools, it times out, possibly due to the following.There is a black box(1) in the back panel that says ERROR 14 and the tuning/torque control/fault indicator light flashes. It's in chinese but the layout in the image(4) appears correct. Hitting PRG shows HO but i'm hesitant to mess with it, though i did try stop/reset.I'm told the higher ups wanted to save $$ so they bought this years ago then the (aircraft) machinist went ?? and retired.If we can get it running, i'm hoping they will buy some collets or compatible chuck, and maybe some troubled teens will take an interested in it and get something out of it.As tribute, I've included the F clamp handle+spindle thing, plumb bob and a half hidden center punch i made on a normal lathe. Fun stuff.900 seconds to post, damn.
>>2877276the black box is a vfd. check the manual for the error code and possible causes, it will also tell you how to drive the spindle manually. also try to spin it by hand if it's isn't stuck. some thing with the atc, could be just hardened chink grease. Good luck, keep us posted. I'm tempted to buy a similar machine, I only have a cam lathe now
I'm looking for a cheap bandsaw. What should I look for? I work mainly with mild steel and aluminium bar stock. This one is fairly cheap:https://www.hoteche.com/Horizontal-Vertical-Metal-Cutting-Bandsaw-90mm-400W-pd45209165.htmlIs 400w enough or should I buy something bigger? I also have a spare coolant pump I could rig to this. I'm also considering cheaping out and buying an old power hacksaw,how terrible idea is that?
>>2876148Bring a notepad, pencil, tape measure, gloves.You're going to be cleaning shit and cutting stock metal for a while.Shut your mouth, pay attention, don't fuck with your phone and you'll be ahead of the crowd.
>>2877457That's basically a toy. It's going to bounce around, and take forever to cut anything thicker than 1/2" aluminum. General rule of thumb for metal working machinery, if it doesn't weigh significantly more than you, it's probably junk.
>>2877449>the black box is a vfdYeah after some googling it appears to be. Some searches suggest error 14 is a ground/earth issue or issue with the motor.>check the manual for the error codeI think the manual i was given is just for the programming/computer, it did have a mention of error 14 but it was in relation to something being outside of paramaters which is locked behind a PIN of 1-6 digits. I tried all 0s and counting up.>how to drive the spindle manuallyThere are 3 buttons on the front for this, one for each direction and stop. They light up when pressed but no movement.I can move the spindle by hand, but the ATC (pressing the tool change button just gives a timeout) appears stuck which could be dried chinalube/grease(i'll see if i can disassemble it at all or find more in the manual). >I'm tempted to buy a similar machineThis one is stamped with 2019, which is probably around when they got it so it has just been sitting there for like 5 years gathering dust and rust. It could've arrived broke or wasn't given any initial setup.Also i've done up a quick and nasty centre punch but have NFI what i'm doing with it or the paths area in freecad. No idea what processor it is.Thanks mate.
>>2877484it's 45 kgs, not much less than professional saws 5x the price. I'm
>>2877532for a vfd I have the manual run procedure is press direction, run, and then set the speed beginning from 0. you need to look in the specific manual for that specific vfd. same goes for the error code on the vfd, its most likely an off the shelf one so they probably didn't care to put the vfd error codes into the main machine manual. Also I noticed in your photo the LOCAL CONTROL led is lit up, which according to the picture you posted means local control, it should be off when controlled by the control panel. it might mean the vfd is okay but is somehow disconnected from the main controller. I'd probably check the manual if there is some procedure to "pair" the two, or it might be a severed connection.
>>2877457What size materials do you usually work with and how much fab work do you do? How much do they want for that saw? I think it would be comparable to a 4x6 bandsaw like they sell at harbor freight. A lot of people have done a lot of cutting with those little saws. I stepped up a few notches for my shop and got a grizzly GO613 7x8.25" swivel head bandsaw. It was basically the biggest 110v single phase mitering bandsaw i could find. I absolutely love the damn thing and use it all the time. It cuts accurately and a lot of stuff that doesn't have to be machined tolerances will get bandsawed to an accurate length or angle and sent. Its a fast, precise, clean way to remove material for fabbing, or even to cut down immensely on maching time.
>>2877543Mostly sub 38 mm barstock since that's my headstock clearance.But I also cut chunks for my mill from time to time, it has a 90x90 mm capacity, I cut a 80x40 bar one time. I also cut hollow profiles like square tubing sometimes. Mosty 40x60x2.5 mm. they want about 300$ for that saw. I'm not really a fabricator, I do this mostly as a hobby and have had enough of hacksawing and cut-off wheels. I'd like something that can make a reasonably accurate cut, and can last. This is the cheapest one I could find that is full iron and has not plastic wheels. here's better photos: www.mojedilna.cz/pasova-pila-na-kov-90-mm--400-w--prenosna-hoteche/
>>2877276I buy and sell cnc machines for a living now, if it’s been dirt for years and maintenance never replaced the batteries in the control or axis… you probably lost parameters. Not a big deal just call the machine builder and they’ll send you some files to load into the machine via an Rs232 cable However if your controller forgot who it was, that’s a bigger deal. That’s a start over with Mitsubishi, fanuc or siemans type dealI don’t know shit about cnc lathes, and figuring out which power chicks fit which drawbar and what drawnut I need has been a headache coming off nothing but a haas millSwiss lathes with bar feeders lights out is a common setup like 90% of my customers ask for do that’s probably what you’ll end up with
>>2877533Even the professional ones are junk. I'm serious, unless you do a bunch of work to them, they're just too light and don't cut well, and are slow as fuck. I'm not saying you need a $10k bandsaw, but look for something more in the $1000 range that's a few hundred pounds.
How would you find the center of a piece that has to be held like a diamond (pic rel) on a cnc mill. No probes I only have indicators and edge finders. I tried cutting the 4 corners to give a straight edge to touch off on but I messed up and didn't cut the exact same amount off each corner so now those edges aren't totally square, don't know how to get them square again. Any ideas? Please bear in mind that my iq is somewhere around 90~ when you answer.
>>2877632>has to be held like a diamondWhy? Post pics of the actual setup.
>>2877637I'm home now so can't, I'm milling the back side of this part and the only straight edge on the top to hang onto is at a 45 degree angle, the part is circular.
>>2877667Can you make a shitty, MS Paint, isometric drawing of the part?
>>2877673Here's the print. I circled the features with the straight edge I'm holding onto to mill the second side, they're circular with a 45 degree edge.
>>2877676Your CAM guy is an idiot for not just rotating the piece to make those parallel to the stock. Couple options:>if the thru holes are there, find center of two of them and calculate to center>set up a stop underneath, against the center boss, touch off with a block against the stop, and calculate from there>if the OD is cut already, you can put the stop there too>tell your CAM guy he's an idiot and to fix his shit
>>2877679>if the thru holes are there, find center of two of them and calculate to centerI haven't drilled those yet but since they're thru I can just hold it normal and touch off and drill those on the first side. That seems like the best way because my vise stops are small pieces of shit I made that I can never get to fit anywhere. Thank you
>when you're doing a stock to model comparison in mastercam and what should be a finished feature is still showing stock left
>>2877676What kind of dumbass engineer wouldn't just have the part be an assembly and have those bosses just be machined as individual parts and either pressed or welded in?
>>2878082I can think of at least 3-4 reasons off the top of my head, especially if it's a short run.
>>2877484nvm I bought a power hacksaw yesterday.
>>2878306do you still have time to get a refund?
>>2878414why? it works and was the price of scrap, probably less since he didn't count the motor as copper but as steel instead.
>>2878476Rip the copper out of it , scrap it and go get some fentanyl You’ll have a better time than trying to get that piece of scrap metal to cut with any accuracy
Happy holidays fellow 4chin machinist bros
>>2878540 Spiky the chipman never asked to be aliveWith a shop rag scarf and nuts for eyesAnd a hatred in his soul
>>2878540someday i want my own mill big enough to have junk shelves inside the enclosure
>>2878540Next job I get I’ll tell them I don’t know anything about cnc machines and only want to be a button pusher And build a dummy out of chips , throw a hoody on him and then go sit in the bathroom for 6+ hours with the coolant and spindle on doing nothing
>>2878543Lol
>>2878535it was nearly free and cuts better than a hacksaw, good enough for me
>>2878306dont listen to retards, that thing will work finederust it a little with this >>2873498 >>2873909, paint it and you will have a cool old style and functional tool
>>2878604I know a guy who could sandblast it for me but I guess the layers of old oil could pose a problem. I'll upload a video of it cutting later today if I'll have time
>>2878634in my first job we had one from the 50s working just fine, i think it already had more crust than body.yeah it was slow, but didnt matter that much, and you could load whatever and it would just cut it
>>2878604this particular one was made in 1967. The lathe I bought it with is from 1966 so that's a nice touch.>>2878306bit of a quick update: The hoisting strap chewed the old crusty wires pretty badly, I'll have to rewire them. The motor doesn't have a label on it so I have no idea how many amps it will draw. There is some unusual switch with adjustable thermal protection controlling it.I also need to weld up some material to the bottom stop and adjust the gib. Everything else seems to function well. I ordered some spare blades, it can also take the ones I use in my hacksaw. I might have time to do something with it next weekend.
>>2878546!!GENIUS!!
>>2872881progress update
>>2878676
>>2878677
>>2878678rotary phase converter
>>2878676One of our customers bitched when we sold him a lathe, and he put a single phase converter on it and said it didn’t match the specifications we advertised Please don’t be that stupid of a customer You’re basically chopping off a leg of your power supply
>>2878672Find a buddy with a bandsaw and get busted still sharp blades from him and make your own custom length hacksaw blades from those!
>>2878678Nice lookin lathe you have there! Get those gas cans and yard tools out of the shop and in a garden/tool shed where they belong!
>>2878708huh>>2878679
>>2878714that'd be great but bandsaw blades tend to be really flexible. Power hacksaw blades are several mm thick to handle the force from the weight and are hardened specifically to not flex. Here's an old busted one that came with the saw, it's 2mm thick but I can barely flex it.
>>2878722i mean if they last less, so what? you are recycling broken ones, they are free
>>2878724you're right, but I'd fear they would bend and not really cut straight. I'll try with the hacksaw blades first since they are already quite flexible, if it works well I'll just use those, if not I'll have to buy the actual intended blades. They're 4$ a piece so it's not that bad, still far more expensive than hacksaw blades or recycled bandsaw belts tho
>>2878676>rustoleum rebuildmake sure you slather it on the ways to fill all the rust pits in
This looks good?
>>2878791y 2nd op? stick it out and cut the whole thing then part it off. is the case body tapered? if so 2nd op hold would be tricky and nearly impossible to make the tapers meet seamlessly
>>2878799Not tapered, straight body. Limited to 3" stock hence the flip
>>2878791hope you have a collet for after the flip, that is not an easy one
>>2878927I will do it with my hands its just one piece
Tap collets worth it?
>>2879054for what?
>>2879055Haas mill
Is buying a Chinese combo mill for hobbyist machining worth it? Anyone know how verify if they’re legit?On a side note, is $3000 for a used granite or Emco combo mill a good price? I feel like if a Chinese one costs that much a used one shouldn’t be more than $2K
>>2879058are the taps slipping now in regular collets? bilz collets are pretty well accepted as reliable
>>2879282They can cut metal but not good enough to where I’d feel comfortable taking on xometry level m
>>2879282I've always heard they are worse at being a lathe and a mill. And I have seen several instances where they got separated from each other to make them more versatile. If you are planning on only doing truly small stuff then you could probably get away with having one.
>>2878799>>2878927Thanks. Posted a pic on here >>>/k/63019054
>>2879629holy chuck pressure batman
>>2872601>The fact that her hair isn't tied up induces rage in me.as a 14 year old i'd use the lathe at school with long hair not tied back and the teacher always used to throw a fit, didn't bother me tho i was normally too drunk to care
ok, so i recently got a small cnc set up in my basement. In the past, i have done single op stuff on cnc routers, but now i have an actual machine with a fixture plate and vise.what i don't understand is how to do 2+ op machining in fusion360 cam. I pick the stock, i set up my model inside it... blah blah blah. lets assume im making a square out of the stock. I machine the top half of the cube, and now its time to flip it over to mill the remaining stock - how can i tell fusion that in my 2nd setup, the milled part is now being held in the vise?
>>2879665Based trailer trash
>>2879704Not sure if Fusion has the same thing, but in MasterCAM you'd either make a new Work, Tool, and Construction Plane on the opposite face, and program like normal off of that, or copy the model to another level, and just flip it around.
>customer gives me blueprint with no tolerances >make their part with ±0.1">they complain two features are too close together>tell them I can do it again but they have to pay >they do>I make the parts again with ±0.1">they complain again Lol
>>2879809>bragging about a hypothetical waste of time and material while driving a paying customer awaythis must have sounded funnier in your head
>>2879810It's through a middle man that gets me lots of work. I bet I hear back from him tomorrow that they've ordered it again
>>2879813You realize that you're the one being the faggot here, right?
>>2879824>nooooo you should spend 40 hours making my part 0.000001" within all dimensions >tolerances? why do you need those? Just make it to specIt's probably some fresh out of college kid making these drawings and he isn't my problem
>>2879856>tolerances?Yeah the general population doesn't have any clue that those need to be specified, let alone what reasonable tolerances to request would be. You're the one being the faggot.
>>2879856.1" isn't even welder tolerance. I've had to deal with more than my fair share of retarded drawings, but you're just being a cunt to a customer for no reason.
>>2879809the kid running the saw is expected to be able to cut to within 1/32knuckle dragging welders are expected to work better than 1/16every machine in the shop has dials and digitals that read to the thousandth or tighter...and you cant work within 1/8youre obviously trolling, but it literally takes more effort to make parts fucked up by a mile than be ±.010. and any real experienced machinist can hit within 5 without any undue effortno one thinks youre cute and i hope the guy you fucked over takes his money elsewhere
>>287988410 thou is what old school manual machinists had as tolerances 5 thou industrial standard and now more common 5 tenths is a cnc invention since we have glass scales and absolute position encoders helping us on every axis
>>2879878>>2879883>>2879884They agreed to pay to have it done again. They requested that I make the part to the dimensions, basically plus or minus zero. They were told that's not how it works. They finally gave me a tolerance of -0.0 +1/16. I told them if they wanted to send the part back, I could fix it to be in tolerance. Its cheaper than making a new one. The part is about a 100 pound block of aluminum and all I'm doing to it is drilling some holes into it, chamfering the edges, and pocketing the middle. It's laser cut with rough edges. They complained a chamfered edge was too close to the pocket. It measured near perfect to me but needed to be above nominal and can't be below. The distance between them was not dimensioned, only the size and angle of the chamfer and the distance between the pocket to the cut edge. I did everything right. Normally if some engineer sends me a blueprint with a typo like 1/2-14 un threads or a countersink that's the wrong size I will message them about it. But this was on them
>>2880154not reading all thatcongrats or sorry for your loss
best way to sell full size machines that isn't ebay so I don't lose 35% in fees and taxes and not craigslist or fbm so I don't have to deal with 9000 beaners coming to my house to offer a ps3 for trade against a $4000 machine and scope out shit to steal?
>>2880199Any successful local auction houses? If not I'd say facebook marketplace would be your best bet. Just don't reply to anyone who doesn't have a German sounding last name and you should be golden...
>>2872881YOU saw this and you actually brought it home? Are you retarded?
>>2880203fml
>>2880204do you know how retarded you sound when he already showed us pictures of the lathe cleaned?
>>2878791I would have done it in 2 passes and 1 tool
>>2880206>fmlNo Germans in your area? Or do you have a mutt last name like Lopez? I swear people on Facespace marketplace and Craigslist practically throw stuff at me because I'm a competent white guy with a white name...
>boss tells me if the edge is too sharp to rub my penis on, its too sharp for the customer>mfw I am female
>>2880515Don’t deburr at all just throw it in the rock tumbler You can ruin the part , mar the finish or cut yourself very deeply with those noga things After I learned rock tumbler hides all sins I deburred mostly for show so management saw me doing it Plus you get a more uniform appearance than a hand deburred edge
>>2880515>>boss tells me if the edge is too sharp to rub my penis on, its too sharp for the customer>>mfw I am femaleYWNBAW.
what do i need to search for if i want a drill bit set that is mostly the same length? my apartment drill press has no easy height adjustment
On a manual lathe, do you guys cut with the main wheel a bit then go back and go forward, or just do two passes with the autofeed leverhttps://files.catbox.moe/ntjse9.mp4Heres a video of a carrot on a lathe, do you think the operator did this by manual programming the code or did he make a whole ass code for this
>>2881179Always the autofeed if you care even the tiniest bit about finish.>>2881167Closest you'll get is a stub/screw machine length drill set.
>>2878715our local machineshop actually just burned down a few months ago
>>2881179>do you think the operator did this by manual programming the code or did he make a whole ass code for thisUnless it's a fancy ass lathe with live tooling, Y-axis, etc, and the part is very complicated, there's almost no reason to program in MasterCAM or similar for the lathe. It's all 3-4 line canned cycles that are faster to write out by hand.
>>2881333>>2881224Thanks anon
Zoomer machinists at my shop are boofing galaxy gas because it "helps them come up with setups"
Hi guys, I got me picrel for cheap, almost not used, it's certainly not the best milling machine out there, far from it, but I just want to do basic stuff in aluminium and plastic, question is, would aliexpress SINO 3 axes DRO with same brand sensors be ok ?I don't think I'll ever use cutting fluid, there's a X axis feed and I am not sure if it's waterproof.
>>2881574Also : glass or magnetic rulers ? What are the pros and cons ?
>>2881574just put a "toauto" cheapest ($185) dro on ebay on a junk bp clone. easy enough to install and works as advertised. my logic is glass scales are old proven technology that they know how to build without to much cheating. theres been some internet rumblings about the magnet strips not being consistent and the thermal expansion difference between the iron table is considerable. either way its centuries better than reading dials
>>2881597thanks anon, so glass rulersIf I go to the cheapest available for me it's that, maybe I'll put a bit more in the rulers, I don't need long ones, the movements are X = 480, Y = 430 and Z = 175 mm.How do you fix the rulers ? Drill and tap hole in the machine ?
>>2881601>How do you fix the rulers ? Drill and tap hole in the machine ?yes. the scales have 2 #10 screws and the reader has a couple. i just used a transfer punch to mark them. just take your time and triple check before you drill. the reader is built to allow for some minor misalignment but you want everything within 5 thou of straight and true
am i dumb as shit for wanting to get into cnc at 36 years old?
>>2881645The pay is very very very low I come from family money so I drive a regular car But “I can’t come into work today because I don’t have a car” Is a common phrase a lot of my coworkers used to say There is a dude who drives a 1993 civic in 2024 and a dude has an old school Acura legend as a daily All fucked up cars f150 with 4 different wheels and tires 5 different colors
>>2881645>reminder that Sieg is a retarded larper that changes his story constantlyDepends, do you actually know basic mechanics, how to work with your hands, attention to detail, etc, or have you worked in an office your whole life? Also WHY do you want to get into it? For a career, a hobby? If you've been watching Titans, that's all smoke and mirrors. They constantly pretend something is SUPER COMPLEX GEOMETRY SPECIAL TOOLPATH RAHHH and then show a video of the most basic, of basic cuts.
>>2881679while i hate to say it, mr annoying is mostly correct. machine shop work has the shittiest wages of anything trade related. $23/hr is big money here metro pnw for an operator with 50% setup duties. programmers with 10-15 years experience can break $30 occasionally. its a retarded industry as far as taking $5 million dollars in overhead to bill $90 shop rate when theres dudes driving around in sprinter vans charging $165-225 to unclog drains and caulk window trim>>2881645just be glad you didnt invest all your spare capital from 17 yo forward into starting a job shop because you were a speg that loved metalworkt. broke dumbfuck shoprat
>>2881690You do have to live where the real work is, yeah. I make almost $40/h as a programmer with less experience than that though. In my experience, the guys that are broke and get paid shit, are paid shit because they're no good. There's several places I could go and make another $10/h, but it would be way less chill than where I am.
>>2881679ive been delivering beer for 12 years and i want out. I'm done working in -3 and 104 degrees in trucks that dont have ac and occasionally dont have heat. pulling kegs up stairs and pallets through snow. i havent enjoyed a holiday in 12 years and my back is way older than 36. machining seems to check all the boxes for me and there does seem to be demand around chicago. bottom line is i need to switch my career up and learn a skill before my company folds or i need surgery. preferably indoors.
for soft aluminium, slow speeds (relative to modern machines), I may have to drop carbide and go for HSS, right ?
>>2881724>around chicagoOh fuck, yeah if you don't mind moving a few villages over, there's tons of jobs in the Chicago area. Zero experience might be tough though, if you can, take a night class or two over the spring semester to get your feet wet.
>>2881724I don't know about cushy machine shop jobs, but all the machine shop/fab shops I have been in or around probably won't be much easier on your back or body than hauling kegs...
>>2881769id be floored if it even came close. whats the most strenuous activity you endured?
>>2881822Nta but I'm currently doing a job with 100lb steel parts. Cycle time is 6 minutes and we have hundreds that I have to do. We have a crane that can do up to 4000lb but imo it's so much slower. What kills your back though is leaning into the machine to get the part into the vice. I've seen 2 machinists just fucking collapse because they blow their back out. Had to be taken to the hospital while they can't even sit upright then they take a week off of work because their pain killers are too strong to be operating machinery on
>>2881694>you have to live where the real work is at Unfortunately wages in china and Russia are shit too For those of you who aren’t machinists, careful when machinists tell you you can make a lot of money A lot of lines to them is like $20/hr that’s like 2 packs of cigarettes an hour!!!
>>2881769Programmer, management, supervisor or “lead” are mostly computer desk email jobs in machine shops “Buyers” And “tool room” are also sit there and click on computer jobs Avoid maintenance, janitorial, deburr tech, saw guy, forklift operator, machine operator, setup operator or millwright positions You’ll be covered in oil and coolant and be swinging a hammer all day and climbing into shit
>>2881756yeah. carbide is generally pretty shit on aluminium since it's not that sharp, unless you have special aluminium inserts.
>have a lot of HSS mills that I'm not planning on using>mostly uncoated but some TiNIs this worth using up on steel? I have a lot of one off steel jobs that I typically use carbide for. Otherwise I'll just try to sell them
>>2882017I have yet nothing with inserts, but I have carbide bits, they are sharp, but I am trying something stupid : making chips in sintered chinese """aluminium", no chatter, but the finish is horrible, I tried to speed up the feed by going to a larger bit, doesn't work, I guess i would have to make the machine go in the 10s of thousands rpms, not gonna happen.
>>2882038What are your actual feeds and speeds, and what kind of cutter is this? Lathe bit? Face mill? End mill? Modern carbide, even the cheap Chinese stuff, can do near mirror finishes on aluminum unless you're way out there on cutting parameters or your cutter is dull.
>>2881824>We have a crane that can do up to 4000lb but imo it's so much slower>I've seen 2 machinists just fucking collapse because they blow their back out.Managerial issue.
>>2881824sounds like a real sweat shop. some guys can never learn slow is smooth and smooth is fast
I wish I got into machining instead of power systems
>>2879809>customer gives me blueprint with no tolerancesIsn't there a "limits unless otherwise specified" section? Unless they drew it up by hand I don't see how this happens.
Who here worked with super duplex stainless on a manual lathe? The swarf on that shit just refuses to break sometimes and the ribbons that come off are like velcro they grip on everything even smooth steel surfaces. But when I got it to break it was the best feeling. Figured out the cutting speed on my own, 22,750 IIRC, been a few years.
>>2882234Solidworks leaves it blank or sometimes puts +\- 0.00 I’ve been handed soooo many “untitled” parts and print’s literally say to make it out of “stl mesh” or “parasolid model” or sometimes just auto select the first choice If you’re not working at a job shop you can’t underestimate how lazy engineers are, they got receptionists to flirt with and YouTube videos to watch on the clock Parts being in or out of tolerance isn’t their concern because it only makes YOU look bad not them they did their job already as far as management sees it your expendable machinist ass keeps fuckkng up Revision changes also count towards your scrap rate so you better hope the engineer’s math was on point and his solidworks assembly skills are flawless
>>2882234I no longer have the old drawing but they've changed it by spacing the features out a bit more to solve the issue. It was 100% on them imo. I'm still gonna do a 1/16th on it
deals?
Not that I'm in any position to buy one, but if you order a whole cnc machine from china do they still provide you with support and the option to buy parts from them or do the companies switch names and disappear after a few years and leave you in the dust? I also do not know if north american and european companies still provide you with support if you buy their cnc machines second hand, but from a five second search it says older machines may be expensive to repair/maintain, which I guess you can compare to having an old sports car I guess.
Bros I done fucked up. How do I put the chips back on the workpiece
>>2882668a welder
>>2872376so to make this short a few schizos have an actually good grasp on how to build an actual time machine and go back and forth into the past thus I'll like to ask how feasible this thing is if they go through with this or if this shit will kill them or perhaps if you can aid these fuckers>>>/x/39491447
>>2882780No there would be no way to deal with the mind goblin that would create
>>2882766We just did this recently. Huge part we just cut on the lathe then the mill guy put in the hole off (due to some problem with the program I heard). They just welded the hole back to be cut again. Not sure how much you can get away with doing that due to heat treatment and such.
>>2882789It’s a thing, but it’s a bitch gotta be good welds, no porosity, no slag, clean roots, good shielding gas, stacked perfectly to provide enough meatIf it goes too cold or you pull the arc too far away or move too fast or too slow you fuck the part I’ve tried to save parts like this but fucked something up, warped the aluminum part, fucked up my weld bead in a minor way so that when I faced it it was low or pitted etc I’m not a good welder I’m an even worse machinist Worst programmer on the planet At least my setups and button pushing is on point Too bad setup operators make less than McDonald’s lol At least I have a bachelor’s Degree, some IT certifications and now some healthcare field shit
>>2879629You don goofed
>>2882814The fuck is wrong with you? Please leave this field and leave this thread.
>>2883044He is a fat hapa male, literally among the worst human combos
I’m having a hard time finding the value of a Deckel FP2. A family friend is willing to sell me his, he’s got pretty much every accessory to go with it including some sort of slotting head. The lead screw is worn but he has a replacement that just needs to be installed. I don’t think he knows what it is worth, I certainly don’t.
>>2883144is that the same guy from /k/? a picture of him with some obese white woman would always get posted
>>2883155From what I understand, yes.
>>28831512-5k $.
>>2883168Ok, thanksI was thinking of offering him around $3k CanadianHe’s invited me to come over and play with itHe’s a good guy, I don’t want to rip him off but I hope we can both come away from it happy
>>2883155>>2883156Kek! Got any links to said picture?
>>2883219Found it after a short searchGuns was and is my hobby but I ended up doing machining I just remember this being posted everytime Sieg was mentioned
>>2883247My fucking sides!
>>2883247surprise hes a spic! machining is a spic trade.
>>2880515>mfw I am femaleThere's no such thing as a female machinist.
>>2876287i had a cert when i started and was running my mills without any help after 1.5 years, fixing any and all problems.
>>2883412Lol. I've seen this mentioned before. Never seen any actual proof one way or another. Definitely an odd acting person though...
I dont have space for a full size lathe and mill. At best I can squeeze in a benchtop setup.What will give me the best bang for my buck? I want decent precision, decent max working area, and potential to do a diy cnc conversion.
>>2883708>i want a unicorn machine let me guess. your bugdet is in the tens to hundreds of dollars as well
>>2883710>”decent” = unicornretard
>>2883712>no budget givena file and a hand drill are obviously the class youre working in
>>2883708Since this is 4chan I’ll assume your budget. Ball screws = some bolt you found on the ground Deburring setup = the side walk You can’t afford granite so go get some rocks from outside to use as weight Your chuck is a $0.50 c-clamp Your cutting tool is a an old hss drill that you turn into a turning tool by scraping on the side walk for hours at a time I think we’ve blown way past your budget at this point, but if you can collect cans we can turn sole nuts into half nuts
>>2883715>>2883726Nigger
>>2883789if you spent the time it took to respond calling me a nigger to do any research, youd figure out an emco maximat is probably what your looking for. but you wont even get as far as getting a garbage freight mini drill pressseethe over my double e monarch you pathetic zoomer
>>2883708How big is your benchtop? Are you wanting both machines in one or two separate machines?
Lads, am I allowed to post on these threads even though I'm a Zoomer CNC coder who's never touched a manual lathe/mill in his life?
Bought some solid carbide drills that don't have tsc. Do I need to pick them with cutting steel?
>>2884029Peck*I need to know how to run them
>>2884029You don't want to peck with carbide drills as uch as you can avoid it. If they're standard length or shorter, you shouldn't need to. If it's a deep hole, you'll have to manually program it, not use a canned cycle. You want to feed in, back out but stay inside the hole 2xD so it doesn't drop chips back in, go back above the stop point, feed in slower until it's engaged, then full feed, and repeat.
>>2878676turned my first piece of metal
>>2884085>took the effort to paint the fucking thing>didn't put in the effort to actually strip the thing down and clean everything properlyAnon, what the fuck
>>2884093:^)
>>2884085tpg inserts are dinosaur turdsccmt positive rake cut so much better https://www.aliexpress.us/item/3256801897530029.htmlcnmg are good if youre taking a lot offhttps://www.aliexpress.us/item/3256805650633832.htmldeskar chinkshit brand is good stuff
Are all head machinists pissed off most the time?
>>2884127Yes, you get blamed for shit you didn’t even know was going on So it’s better to just get mad at everyone and yell at them first thing in the morning so they hopefully fucking don’t do whatever the fuck their operator button pusher ass was thinking of doing
>>2884114thanks I don't have many inserts just what was included in the tooling that came with it I also have an ammo box or 2 of HSS my dad had from back in the day.Im not really sure what to get I figured I would get this starting out Im mostly going to be cutting whatever scrap steel I can find
>>2884681the 6018/9018 grades have worked better for me. the cheapest inserts usually have too much binder and crumble apart unpredictably get a boring bar or 2 that uses the same inserts
Are desktop cnc mills any good? Can I run one inside?
>>2884957>Can I run one inside?No. No one has ever run any kind of CNC inside before.
>>2883853No matter who you are you're better than sieg.What does a coder do these days? Just import programs into machines made from software? I edit some programs for the fanuc lathe but they are extremely simple.
>>2884962Yeah, why do you think they are completely enclosed with bulletproof doors?
>>2884968>Yeah, why do you think they are completely enclosed with bulletproof doors?To keep the nigs from stealing your parts when running them outside...
>>2884937I was really just looking at this that was in the description I figured I would be mostly cutting regular steelNK9018: Suitable for processing stainless steel materials.NK3030: Suitable for processing steel parts.
>>2884972at 50 cents a corner or less you can experiment a lot for $10-15/pk. the grades are all just made up chinkology anyways. just watch out you dont order cermet as they are not for general purpose type cuttingthe polished inserts for aluminum work awesome on steel at slow manual machining speeds and cut rather than shear for less force on the work and tool
>>2884970OK, for real though, why do doors just autolock after shutting off? I always keep them ajar before turning off because of this.
No wonder everyone hates you fags.
>new job>boss is having a hard time setting up a laptop for me with cam>tell him I can just write code at the machine I'm the meantime >it's been 3 months now and I'm still programming by hand I'm mentally exhausted from this and have no idea where he's at with the laptopI'm so tired
>>2884957I’m not sure if your mom is going to appreciate chips all over her carpet
>>2885095post codei dont believe anybody can hand code at the machine much beyond simple drilled hole patterns and really simple plain geometric featuresinb4>but muh 1970s tape machinesthose programs tooks weeks to write up and were all simple 2.5d parts for production
>>2872376I have a 3D Printer (Starter one I got 4 years back) that I want to start using. I gave up because of the inverted issues of printing? am I suppose to use something like a "Splicer" plugin? I dont own 3DS Max anymore and want to try it in Blender.TL:DR how do you reverse the inverted print? I use a resin printer if this matters
>>2885113Its basically 2.5d parts. We have a 4th axis but sales doesn't know how to sell 4th axis parts. This code is for a steel part I think is 3 feet long, has a Y/Z rounded end, and some counter bore holes I did by spiral milling with an end mill. I make extensive use of local subprograms and manipulating tool offsets using G10 to create roughing passes. The rounded corner using a copy mill was done using excel to simplify the math and repetitiveness https://jumpshare.com/s/obrGwMvrsg2sJMrNp58A
>>2885113They made me write code by hand but I program weird I do this sort of thing T2 m06 G43 h6 d6 G54 P1001 G56 p1001 ===G53 z home G53 xy home Spindle off ===N1001 G00 x0.6 y-0.6 G00 z 1.0 G41 x y G40 M99====It’s a weird format, but I’ve been moved to management and sales via a promotion So now I’m mostly teaching office girls what a lathe is and or shipping parts across the country and talking to people Because i developed a coolant allergy from my last place not using mist collection of any kind
I'm gonna buy a Tormach PCNC. I can't wagie on for someone else anymore. I am more than capable of designing and making my own parts
What's the best knockoff HGR style linear rail? Is it really worth it to shell out for a name brand?
>>2884968>enclosed with bulletproof doorslmao LMAO They're pretty durable, but not that good, especially if it's 15 year old polycarb that's been soaked in coolant every day. Then it might as well be tupperware. We had a 30 pound block of aluminum get absolutely YEETED 2 feet, and UP 8 inches in our machine, and it totally spiderwebbed the inner door pane.
>>2885140Design and make your own parts, then go wagie for someone else and hire some kid to wagie for you
>>2885120i hope youre getting more than operator wages. most programmers couldnt write that on their own
>>2885184No I get $26/hr. But only 3 years of experience so that feels about right
>>2885113Worst job I've had in my entire life was 6 months in a very small CNC shop where it was expected to write everything standing at the machine. Doing the CAD profiles on the machine, complex shaped parts in a simple, single vise setup. Not only that it was expected that you'd be running at least 1 other, preferably 2 other machines at the same time while one job was running in the main machine even when the cycle time was a few minutes. I got strips torn off me one day because I didn't notice my machine had finished a cycle on the other side of the shed a minute ago while I was deburring another part whilst the bandsaw was cutting for the next job. Used to come in 1/2 hour earlier than the other guy and spent it cleaning up the pig sty they'd left everywhere. Got told off for that because it wasn't productive. Then later got told off again because the place was a mess and it's my job to clean up after them.
>>2885116Not an /emt/ question, but /3dpg/So I won't answer here
>>2885139In the coming days, your ilk will be displaced by the thousands of unemployed "Indian SWEs" that aren't reallyAnd it will be an improvement :(>>2885196Sounds like a "poo in the loo" standard, where *you* have to lower your standards, to meet your coworkersDon't worry, it's not a race to the bottom
>>2885184If they can't do something like that by hand, they don't deserve to be called programmers. That's like mid-tier difficulty, hand programming at best.>>2885139Every time I see you post code, I vomit a little.
Was quite proud of this moment a few years ago. I had to make the trepanning tool to do this job, face-grooving if you like. The material was 2205 duplex stainless steel and the internal bore and internal OD had tolerances of less than half a thou, +/- 0.01mm. Did it on chink shit manual lathe. Can you believe this kind of work pays less than $50k AUD a year...
>>2885224Made an emergency tool one day to pump out some U bolts in a real hurry using only what was lying around which was all round bar of varying diameters...
Anyone know any good books/articles for the basic design of desktop (~200 pounds) size CNC milling machines?I'm interested in building a small machine that can cut steel at low MRR's and would like to do some reading first.
>>2885239https://a.co/d/fw4AFSoI bought this book expecting it to be about machining, but it's basically a guide to build a CNC machine. It explains the differences in motors, control panels, software to run it, guide rails, etc. Nothing too in depth but it was a good foundation
Total noob here. I want to do pcb, but then I was recommended to use CNC to cut then out of FR4.Another option is to set UV lazer and print on the photoresist.Also, they recommend to use this device.What's your opinion on all of this?
>>2885270>Another option is to set UV lazer and print on the photoresist.you can do that with a resin 3d printer
>>2885346But I cannot do holes, right?
>>2885270id love to be corrected on this but my understanding is that you simply can't mill copper isolation traces 'properly' at that dimension for pcb; a tiny carbide mill will snap before cutting copper, they expect you to use the pointy thing which needs regular sharpening and so is a pain to register/set up properly because the width and depth of cut are now related
>>2885362I saw videos like this: https://www.youtube.com/watch?v=TBB32mKpizsor just google "pcb milling cnc" and there are bunch of videos.I do not like an idea of copper dust though.
>>2885220Yeah? And my files aren’t .nc files, I program mostly for converted floppy haas drives 2mb max programs…. No file extension or the controller can’t see it
>>2885359oh yeah, you will need to drill those manually, that is not the difficult part desu
>no spaceshould I rent a storage unit and build a shop in there?
>>2885270Stephen Hawes on youtube posted a video about using a fiber laser to make pcbs, which potentially could be cheaper and more accurate, but he used FR1 boards
>>2885579You’ll have to run a phase converter and draw a bunch of Power
>>2885270Laser print your design, use an iron to transfer the toner, and then chemically etch.No need for fancy equipment.
>>2878791what program is that?
>>2886304That's the built in simulator for Mastercam.
For a machinist training program do you think I could just rip off the titans of CNC training and do it in house
>>2887582That’s more a programming course Just teach them basic operations and scan them for their money
>>2885270Its all a bad idea. I have done toner transfer and used milled pcbs, but both of those techniques are a sad approximation of the real thing. Use a pcb fabrication board house and use a board design program like kicad and get a real pcb. Plated through holes and plated vias are worth the price of a board. I personally use pcb unlimited, but there are cheaper options.Also don't be scared of surface mount/smt stuff. You can use hot air tools and tweezers (and a microscope) to assemble. BGAs are doable with the right techniques without using a rework station.https://www.stencilsunlimited.com/products/stencilquik-bga-rework-stencils(I think this company is related to pcb unlimited too)I went full retard on this some years back.
Column or bridge design for a diy cnc mill?The goal is to be as rigid as possible for milling steel. The frame will be made of hollow square steel and steel plates. Potentially going to fill with sand/epoxy granite depending on performance.
>>2888021why not just buy a dead vmc and put a new linuxcnc control on it?
>>2888022I suppose I could but I dont really know what to look for. And I don’t have 30k to drop.
>>2888026Actually, some of these are not that expensive. Are there any around $5k that are worth buying?
>>2888081entirety depends>doa at a shylock machine dealer run dont walk away unless free including delivery >not under power but obviously was being used recently at auction pretty safe bet. expect minimum bios memory reload issues from a dead board battery >being sold privately by a company to free up floorspace for a new machinethis is the best. they usually just want it gone and arent trying to make anything on it. theyre usually upfront with what issues it has and have all the mfg documentation 90s jap machines are the best. most parts are still available and theres lots of troubleshooting info out there for fanuc. mitsubisi is pretty well supported still as well. mazak is kind of a can of worms for old machine support
>>2888021If you insist on /diy/ing this, figure out what kind of work you're trying to do on it first. Gantry/bridge is unquestionably a more rigid setup, but it's inherently more limiting on work envelope. That's part of why even "small" bridge mills tend to be so big.Having done similar (went through several iterations of scratch-built CNC router and am still not really happy with it), I strongly recommend you look for a used machine. It WILL be easier that way, and probably be cheaper. Consider: Even if the machine is completely clapped and you have to re-scrape ways and replace bearings...you'd have to do all that with DIY build, anyway, plus design and build the rest of it.Be prepared to possibly hack on your own parts if the machine is really trashed. Certain parts are horrendously expensive to replace. Go have a look at prices on the ultra-precision class bearings like you'd use on a VMC spindle or replacement parts for brand-name controllers. If you don't have budget, it might be better to just dump the relevant assembly and build one yourself.
>>2888086>>2888097I think I’ll keep an eye on the market for used vmc’s, see if anything pops up. One issue I’m having is that these things are all like 100” deep. The width is one thing but the depth is fucking me. I really don’t know I can make that fit in my garage. Maybe with some extreme reshuffling, but I’m going to have to do some planning.
>>2888106another machine to consider might be a bridgeport boss or v2xt factory cnc. they were pretty well built machines mechanically but the controllers are no longer supported so they can usually be had for a song if dead. theyre a reasonably easy pc retrofit because theyre so simple. the drawbacks of them are>pathetic 5" Z travel envelope >no toolchanger >no chip enclosure/coolant mess>no rigid tapping>slow 100-150ipm rapids>slow 4k rpm spindle>variable speed belt drive head is funky to controlthe pros though>2k lbs so you can move them easily with a pallet jack>easy to get any mechanical replacement parts>nmtb30 tooling is reasonably easy/cheap to find = $50ish/tool on ebay>they hold their value. you can usually sell at about break even any day of the weekt. made a lot of parts on my running shitty mach3
>CNC lathe>cnc mill >gun drill>caustic bluing furnace >plastic injection press I'm pretty sure I can fit all of this in my apartment
>somewhere out there is a machinist that gets to create the molds for all of Bad Dragons weird dildos I hope he's paid well
>>2876239FreeCAD king here, I made a file especially for youSince fusion isn't usable for me and I don't want to give these jews any credit card info for a "trial" or some bullshit like that this is the most I can do for youPerhaps you need to find some sort of surfacing tool in fusionI found an option to get it in FreeCADThe problem is that it's just a representationIn the details it will deviate but for a physical thing that isn't some kind of ultra precision lense for printers it will sufficehttps://files.catbox.moe/25xo37.FCStdSpoiler: He will show you everythinghttps://www.youtube.com/watch?v=D__Na7JHp3E
>>2888022TFW I just realized HAAS machines run on Linux that’s why there are penguins on the load screen
Anons, I'm thinking about getting a lathe. Firstly, does anyone have any experience with mini lathes like the Sieg or Vevor models? I know they're not Bridgeports but are they decent for the money to get your feet wet?Secondly, a bigger lathe would probably have to go in my carport/garage as I don't have anywhere else to put it. It's closed in on two walls and a garage door but the fourth wall is open at the top ~40cm by the ceiling, and the door is a just a fence gate. Is this closed in enough, if I were to cover the lathe when I'm not using it?
>>2888381Just build a little green house thingy around it 3 walls and an open roof + a little green house You might need more way lube than usual Also you know those Sieg 7x10 lathes are little right? Like they’re so little they weigh about the amount of a single plate at the gym maybe a little less
>>2888381can you get a hardinge instead of that bullshit
How much money do I need for a good CNC machine shop? My main goal is to be profitable (at least enough to pay for the setup), but of course there is the hobby aspect of it. I want to do everything from motorcycle parts to tools to firearms to random trinkets and shit to sell on etsy.I don't own a house yet (so no workshop) but I figure I'd better start putting aside some money if I want this.In the meantime, I'm going to dick around with some simulators. Which ones are the best for learning that aren't "request quote" level expensive?
>>2888566Get a real job and fill your garage with second hand machines and chinese crap.
>>2888566>How much money do I need for a good CNC machine shop?Define "good". At minimum, for a basic, used 3-axis VMC, tool and workholding, and inspection, good compressor, etc, you're in the range of $200k. Add $100k for every machine past that.
>>2888682I have a “real” job, this is meant to be a hobby that pays for itself.>>2888736Stop being such a hyperbolic retard. You can get a 5 axis setup for that much.
>>2888682This every neckbeard thinks he can compete with every machine shop in America by just buying a clapped out production machine and running it in moms garage
>>2888836>You can get a 5 axis setup for that muchLmao. The machine on its own maybe for one that isn't 15+ years old. You're the one that said "good" not "cheap as possible". All of this shit adds up really fucking quick unless you're buying nothing but aliexpress specials or spend months hunting auctions for everything.
>>2888839You can slap a 5 axis trunnion on a clapped out 3 axis for under 10k. You can get a used entry level 5 axis for 40-60k, and a nice one for 150k. Hell, I’m pretty sure Haas sells brand new 5 axis machines for that much.You don’t need 200k for a “good” 3 axis setup. Especially for a garage shop.
>>2888846>I’m pretty sure Haas sells brand new 5 axis machines for that much.They do, but they're pretty junk, we have one.>You don’t need 200k for a “good” 3 axis setup. Especially for a garage shop.Again, I'm including everything. The machine, workholding, toolholding, compressor, saw, inspection equipment, install costs, 0TDS water system (yes it's mandatory unless you want your coolant to go to shit), and all the other random shit you need for a functioning machine shop. If he wants to buy a used Minimill and larp, then sure, you can do it for under $30k, but it's not going to be good.
Do I join a machinist union ?
>>2888857No, that’s gay + communism. Soft hands.
Gloves or no gloves for general part handling?
>>2888165>I don't even get to see if it helped anon or notWell sadness be, one needs to consider this outcome before effortposting
>>2889175Do you like cuts on your hand and the potential to have whatever conditions - "recognized and proven" or not might arise from repeated exposure through little cuts in your bloodstream both in terms of general human biology and whatever unfathomable individual properties your body has?I'd wear gloves when still somewhat convenient to avoid cuts and too much exposuret.only spent 2 weeks as a parts loader feggit while actually learning electronics
What is something I can make to impress my boss?
>>2889706Correct parts
>>2889706Buttplug
