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Welcome to /diy/, a place to:

Post and discuss /diy/ projects, ask questions regarding /diy/ topics and exchange ideas and techniques.

Please keep in mind:
- This is a SFW board. No fleshlights or other sex toys.
- No weapons. That goes to /k/ - Weapons. The workmanship and techniques involved in creating objects which could be used as weapons or the portion of a weapons project that involves them (e.g., forging steel for a blade, machining for gunsmithing, what epoxy can I use to fix my bow) may be discussed in /diy/, but discussing weapon-specific techniques/designs or the actual use of weapons is disallowed. Things such as fixed blade knives or axes are considered tools, things such as swords, guns or explosives are considered weapons.
- No drugs or drug paraphernalia (See Global Rule 1). If you want to discuss something that could involve such things (e.g., carving a tobacco pipe from wood) that's fine, but make sure it's /diy/ related and doesn't involve drugs or it will result in deletion/ban.

Helpful links:
https://sites.google.com/site/diyelmo/
http://www.engineeringtoolbox.com/
>>
Some friendly suggestions for posting:
- First ask Google, then ask /diy/. Your question will probably be better received if you do so.
- List available resources (tools, materials, budget, time, etc.)
- Try to use pictures and explain the goal, if possible
- Be patient, this is a slow board; your thread will be around for days.
- Share your results! /diy/ loves to see problems solved and projects completed!

Hey /diy/ I’m typically a man of/pol/ but I went on a /sig/ now I want to do something with my life. I think I will try metal working and this is what I got so far
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Good posts
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>>1330145

bigger area for fire, also you need to use charcoal instead of coal.

you can turn wood into charcoal though.

Charcoal burns hotter, also you need bellows, something that blows air at the charcoal and makes it even hotter.
>>
Renovate the chicken house. Get chicken. How I envy you the opportunity.
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>>1329539
>>1334918
yeah what the fuck you have an opportunity to /sig/ staring you right in the face OP
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>>1333337
>leeeeet

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I'm about to start a welders course and heard it really fucks with your lungs and all that. Are there any non meme tier welding gas masks/respirators I could look into buying?
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>>1328984
>not huffing toxic fumes makes you a pussy

I guess soldiers are also pussies for wearing hearing protection?
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>>1326401

I took 2 years of welding in High School.
I never noticed any sort of lung issues.

you REALLY don't need a mask.

The only time I'd suggest a mask is if you did welding 8-10 hours a day 5 days a week for 30 years.
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>>1334043
It depends on the dose and what you're exposed to. Carbon steel isn't much of a concern itself. The main hazards from welding it are from byproducts like smoke from certain procedures commonly used, like stick. TIG on carbon steel is probably only a concern if you're in an enclosed space, and then it would be more the smoke from surface contaminants or ozone buildup than anything from the steel. Stainless brings the concern of hexavalent chromium, which can easily exceed safety limits from some processes. Spray MIG and plasma cutting produce a lot of vaporized chrome. Short-circuit MIG produces less, but still enough to watch for. TIG on stainless generally doesn't produce enough to warrant special precautions outside of enclosed spaces or very high amperage, but if you smell it or notice irritation, you should probably get a particulate filter.
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>>1334801
I'm the professional Tig welder from the 90s. My lungs are fucked. I'm small enough that I could get inside the fittings (huge stuff for nuclear and petrochemical industries) so I'd get a proper lungful. Speedlight on and I'd only have to come out to change cylinders or grinding disc and I could always smell the weld on my clothes when I got home.
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>>1334800

You also probably welded in a welding booth with an actual ventilation duct built into the top of the booth that continuously sucks out the smoke and toxic air and blows it outside.

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bored HVAC tech here, posting some pics of jobs I've found that were REKT. Starting off with this expansion tank, never seen this before but a hole rusted through the side of the tank.
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>>1332904
The shit they teach you in school if they teach it by the books is hard and fast. That is not true in real life. it is all up in the air in reality. You have to be an artist in a chaotic world to find the correct repair in the reality. When you go to a job nothing is black and white. 40 years speaking.
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>>1332904
Goof fucking luck, I hired a guy that just got out of a 2 year hvac program to help me install an a/c and he could not even wire in the fucking contactor after I showed him where the wires went.
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>>1333225
Sounds like a shit program
Mine was 10 months and I was completely rewiring a unit 6 weeks in
They made us gut it and just go off of the diagram but thanks for the luck
>>1333222
We definitely don't replicate the random shit that can happen
I went on a call with an instructor who told me the unit wasn't turning off, trying to get me to think of what could be wrong
I was thinking stupid shit like the unit isn't satisfying the house and just consistently stayed on which looking back now I was retarded because that would have been a problem from the start. But I pulled the electrical panel and the damn contactor had welded itself together and was constantly powering the compressor. It completely blew my mind because I have been used to seeing components in good conditions and my brain didn't even go there.
>>1333217
>>1333216
My electrical instructor was a hardass about us learning electrical. He said 90% of calls are electrical components failing so he had us in lab all day and basically tossed the book aside. At the time I was upset because it was a steep learning curve but I'm grateful now, I'm fairly proficient at hopscotching around till I find what's wrong.

Thanks guys
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>>1331776
Just went to a friend's house a few weeks ago, he bought the house and asked me to look over the HVAC. The gas union was on upside down and the go-rilla that installed it cranked it so hard they split the union nut. Instead of replacing it, they doped the living shit out of it and hand tightened it. If anyone had pumped into it the line would've come apart.

>>1331819
One asshole who burned his house down by leaving a full gas can next to his water is why all new heaters have to have flame safety burners now.

>>1332158
LP might've gone splodey but not natural gas usually. Natural gas is lighter than air so it rises, the house would have to be empty for a while and have a major leak to fill up enough to blow. LP (propane) on the other hand is heavier than air and will pool on the floor until it gets deep enough to reach a lit pilot. Go look at gas explosions on YT.

>>1332171
It's a lot harder to blow up a house with gas than people think. I still leak test with a lighter, every so often I get a sweet little blue flame.

>>1332666
Fortunately no. If the house is super nasty I just refuse to go in it. I don't do roaches, sewage leaks, dog shit everywhere, etc. Also wash your hands after each call and before you eat, etc. I did get called to a house once, when I got to the door the guy tells me "oh yeah, by the way, my kid has chicken pox but I'm sure that's no big deal". No big deal except I've never had it.


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>>1332904
learn electrical x 1000
I'm new to the trade and I go to no heat no ac's other companies lead techs can't fix because it's "relay logic"

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Is it too late to go to trade school to be an electrician at 26? Have a degree in Industrial Technology and unemployed.
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>>1335066
As fun as it is to work on my own stuff I do need to make money so I need an actual electrician job too.
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>>1335089
You need brains.
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>>1335094
I have brains. My grades don't reflect my actual intelligence. I'm actually pretty smart, just lazy.
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>>1335103
>I'm smart
>I just do bad in school because I'm lazy
Nigga I showed up to class on hard drugs and got honors freshman year. Now I'm about to graduate trade school with honors. I've been lazy the entire time.
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>>1335140
No I'm literally too lazy to bother with actually doing assignments. My test and quiz grades are usually good but they are only anywhere between 30-50% of the total grade for most classes. Homework, labs, and projects usually comprise the other 50-70% and since I don't do any of it that's why I keep failing.

Life is too short to spend all your time doing bullshit work as opposed to stuff you actually enjoy.

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In this thread we talk about:
- ham radio
- projects you have going on related to radio
- baluns and ununs on salvaged cores
- compact antennas for 160m band.
- SDR
- discussing how should a new general trhead look like.
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>>1335017
Back in the day when I learned Morse code I was surprised how quickly I learned to recognise all my colleagues, even at a stage when I was still a bit shaky.

I was also told a lot of stories from WWII where intelligence operators on both sides learned to recognise the fists independent of their call signs. We also learned some counter means but even that would be penetrated after a while by a skilled int. op. And I did meet a lot of skilled people.

So, how then do you train a neural network without getting their call signs into the mix?
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>>1335012
Could you spell it out for me?
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>>1334580
>was trying to use gimp
when you export a jpg, in the quality dialog, under advanced,turn off EXIF and XMP

>>1334832
nice work if you can get it

>>1335092
edit out call signs in the samples
anyway, Tx fingerprinting also has its place and may be easier to automate
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>>1335115
>edit out call signs in the samples
That is a minimum, yes. I often hear sloppy fists during CQ.
>anyway, Tx fingerprinting also has its place and may be easier to automate
That is used against radars, especially where tube power amplifiers are in use. I am not sure it can be used against solid state radios or their PA stages without also seeing biasses due to impedance mismatches.
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Having a nice QSO with a Mexican station on 7.195 and then "Captain Dave" comes on and interrupts (of fucking course). Wish that fucker would just stick to 3.850.

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Lets see what i can do with this chinkplank.
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>>1335057
>Thanks for the suggestions dumbass

did you post in the wrong order? the first one looks better. It will be pretty cool after you've stripped the rest of the linoleum or whatever that is.
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>>1335093
I sanded put a thin layer when it dries imma sand it again. Then apply a more natural looking color. Something like a shitty tobacco burst. Lots of sanding. How do you suppose i should go about the finish?
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Sand then apply.
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This is pretty much the worst thread ever made.

Looking at some land that has an old Mobile Home thrown in .Listing says its "not too bad" but not considered as part of the sale price so its old and rough but it has a propane generator, tank and this 12 battery array..

If I were to decide I could actually start residing in the MH till I can build a dwelling what kind of use would this set up give me? Like run a refrig, lights, stereo I would eventually add PV panels just wondering how often I'd have to be running the generator as my main interest is having a quiet place.

https://www.realtor.com/realestateandhomes-detail/35-Sunset-Strip-B_Cerrillos_NM_87010_M13447-41307#photo10
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>>1335138
lead acid batteries are damages if they get drained under half charge

what is the amp/hour rating?
how much are you using?

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discharged thread: >>1322757

>I'm new to electronics, where to get started?
There are several good books and YouTube channels that are commonly recommended for beginners and those wanting to learn more, many with advanced techniques. The best way to get involved in electronics is just to make stuff. Don't be afraid to get your hands dirty.

>What books are there?
Beginner:
Getting Started in Electronics Forrest Mims III
Make: Electronics Charles Platt
How to Diagnose & Fix Everything Electronic Michael Jay Geier

Intermediate:
All New Electronics Self-Teaching Guide: Kybett, Boysen
Practical Electronics for Inventors: Paul Scherz and Simon Monk


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>>1335044
>measuring current output
By shorting the source? That's an unusual procedure.
>Let that be a lesson
Been there.. Wishful thinking will always get ya.

My Metex pocket DMM only has a single 400mA DC current range with a F800mA fuse, fortunately standard 5x20. It also has a PTC but I managed to blow the fuse nonetheless. I rarely use the mA range any more because I now have a set of low-Ω 1% resistors (1Ω, 100mΩ, 10mΩ) and measure the voltage drop instead. The result is more accurate because the series resistance of my meter (fixed test leads, ageing switch, PTC, fuse) is poorly defined which plays a role when you do circuits that run on a single cell and down to 1V. You always know the 'burden' voltage (silly term) because that's what you measure. Sense resistors are also useful for measuring (pulse) currents with a scope.
>>
How is the average voltage/current of a waveform useful? I feel I understand why one would want to know RMS, but I'm not really sure what the significance is of the average.
>>
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So I actually built this thing. It is called a "Zapper" and it is basically a positively-offset square wave generator.
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>>1335132
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>>1335130
Circuits with sufficient filtering action react to the average value. This includes motors and solenoids. Similarly, LED and some other lamps produce light in relation to the average value of the input current.
Some components are dimensioned based on the average value.
Ye olde moving coil meters displayed average values, so it was important to know the average value of the measured waveform in relation to its amplitude, RMS value, etc.

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Wave or Surge ?
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Ganzo chinkshit masterrace.
>>
I just use a cheap no name multitool my friend gave me after he found it in a fired person's desk

it's hot pink and I ripped half the tools out of it intending to put a flashlight back in its place, but never got around to it

it's got a knife, awl, phillips head, and a saw with a file/rasp face, ive never needed more than that out and about
>>
>>1334312
lmao
>>
Got a Wave with me all day. Its great for small random stuff in the shop or at the site. Saved me a few walks back to the truck to get a screwdriver or pliers.

At first i was not sure if i wanna go with a wave or a surge. As a carpenters the wave just fits my needs without being too bulk. But for heavy duty tasks id go for the surge.
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>>1333133
Wise answer

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I just bought a Becker bk 7 and I've seen a lot of different modifications people have made on their knives on youtube and other sources. I know I'm going to grind down the thumb ramp on the back and I'm considering whether or not to strip the coating on the blade and get it duracoated. Does this sound good and are there other recommendations to mod it?
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>>1333193
>looka this heavy cringy ethnic knoife guise
*tips bushcraft katana*
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>>1333355
This made me chuckle more than I probably should have
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>>1333289
not him but what goes into knife making?
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>>1334037
Steel.
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>>1333210
ouch

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Convince me this isnt the god tier tool brand lads
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>>1334984
>Ever wondered why we don't outsource medical production?

Do you realize that all generic prescriptions are made in India right?
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>>1334984
>only thing cheap about china is their manpower.

Their wages are increasing every year, and their lines are getting more automated every year, and with the logistics of shipping items, domestic factories make more and more sense every year.

China is already running certain blackout factories.

Thats all besides the point, the switches arent going to be built to a higher standard because they are in an identical factory in the USA vs another continent. The switch is what it is, because of what some money pinching faggot specced it out to be.
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>>1334993
yeah only the ones without patent, made by indian companys.
thats not outsourcing
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>>1334971
>Made in China Vs made in Japan
I know which I'd prefer, you angry little poorfag
>Dewalt
Ha, no wonder. Enjoy your wasp colored Black & Decker shit.
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>>1333943
Power tools are for pussys and conformists . Unless u mined and forged all the materials and built it yourself

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Any Machinists around? Full-time, hobby, or otherwise?

I'm looking to get into it as a hobby.

A lathe and a mill are high on my lists of things I want... including a band saw and a grinder. Then there is tooling to consider. Not really sure where to jump in. Debating on trying to find a good deal on lathe or mill via craigslist, or just buying new from grizzly and avoid potential headaches (like worn ways, issues with gearing... stuff I might miss from being a newbie and buying used).

Any suggestions?

Also... general machining thread?
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>>1335036
For 3k USD it looks nice, do you have room for it? The enclosure really adds to its footprint, but it's really nice for catching all the coolant so you can cut a lot faster by using flood coolant. Using the interface will take some learning I'm sure if you don't have any cnc knowledge.
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>>1315933
I'm gonna go to school in the fall and I need to decide between Machining and welding. Any advice?
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>>1335118
Welding can fuck up your lungs if you fuck up or are otherwise unlucky. I'm not sure on the pay but I'd assume Welding would be slightly higher, and a good bit easier to find a job in than machining.
>>
I want to get into metal working and build both fun little contraptions, and basic little firearms once I'm in an area that doesn't have fucky local laws about that, but I know so little about metalworking that I'm not sure what search terms I should even use to find this information. How does a person learn this stuff outside of taking classes?
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>>1335122
Well, I don't want to live forever

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Hello /diy/.

I found this old Hytest axe and I was wondering how exactly I could go about repairing it. Pic related shows the substantial crack at the back of the eye. I wanted to know how best to fix this. Also, there is a fair amount of rust covering the surface of the axe head. I want to know how I can remove this and prevent any flash rust.

Thanks.
>>
V out the back of it, clamp it closed and weld it up wile keeping the front half cool.

As for rust just sharpen it then use it. Rust will get worn off.
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>>1334790
It's doable with the previous advise if you want it as a showpiece or very rarely used, but if you want an axe that would deal with heavy use...nah bin that fucker
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>>1334790
thrash the shit axe head, but do something for that crack on the wall
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>>1335091
>>1335095
Not going to be using it much if at all.

>>1334814
Thanks for the advice.
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>>1334790
Cheap+easy way could be to drill through one side, drill+tap the other, and use screws.
Could even be fancy and countersink the heads

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What's the cheapest way to produce graphene.
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>>1334952
Hmm.... You can't commercialize the product. I don't know if it is a bait or what but let me put it this way, am just trying to know any other methods (not the whole process) which has some scope and is not yet been patented. All i need is to know any other way we ( i ) could produce the damn thing with in controlled quality and heavier quantities.
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>>1334950
You on IRC by any chance?
>>
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>>1334976
Lol nope. Am a curious dude. Why do u ask? Do you know anyone.
You see the point is am from india ( pajeet nibba ) so i don't have access to the information or support like you Americans and Europeans. The worst part is that all my people are so fixated on conventional thinking and i can't find people who are capable or willing enough to help me. My lecturers ( collage professors) don't even know what graphene is and how to use it. So far i have planned to study production and mixing of crude graphene onto various plastics and polymers. If you have any sort of information regarding this please let me know. I hope graphene doesn't end up like thorium based nuclear fusion reactors.
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>>1335006
On IRC it's easier to speak privately. I think I will be able to help. Set up a Hotmail or Gmail account and put the address here, I'll be in touch presently, might be the end of the week.
>>
with a tourniquet



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