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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:
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!

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Link to previous thread:

>I'm new to electronics, where do I 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.

>Links to get started
61 replies and 15 images omitted. Click here to view.
designing and building is definitively more learning intensive, and also more rewarding.
but you need to know some basics first, otherwise you are just following a schematic anyway.

making you own stuff is the goal, kits just might be a good place to get the ball rolling.
depends on how competent you are and how complex whatever you want to build is.

looks good, man
The problem is more that kids these days expect to pay China mail-order prices for everything, and that's not enough to run a brick-and-mortar store on.
>nothing interesting in datasheets

you kind of need the data sheet so you know what the thing can even do and how to make it do it
Thanks for the reply. My recycle center in town, is shit with overpriced laptops and no components what so ever. Salvaging it for general parts does seem far fetched, but with nothing else to do, it lets me play with something.
Find your local goodwill computer center. There should be one somewhat close to you if you're lucky. For a while I was visiting mine every Sunday.

I finally decided to have my whole house rewired. Had crappy 14awg power and cat3 data, updated to 12awg power and cat6 data. The problem is my electrician dun goofed. He ran the cat6 and 12awg romex literally right next to each other for most of the runs. This really pisses me off. I know you're not supposed to run data lines and power lines right next to each other like that. Can I demand he redo or refund the wiring? Is there some business bureau I can report him to? Any advice?
16 replies omitted. Click here to view.
The Australia & New Zealand wiring rules state telecommunications cabeling must be at least 50mm away from any power cabeling. Unless they are seperated by a barrior. Where is OP from? Using awg instead of mm so I assume usa?
If you specced that he had to space them a certain distance apart then you may be able to go after him. Realistically, having them that close will make little difference. Most IT guys seem to just lay the shit ontop of ceiling tiles, over fixtures and zip tying it right onto my runs.
the problem should be close to the terminations, the cat3 and the power should be able to run relatively close provided the terminations aren't too close. more than 50mm
I think we have something where you can run comms cables with power cables as long as the insulation is rated to the highest coltage rating present which fulfils the barrier condition

do you guys have anything like that?
just interested
You are correct. The difference between cat3 and cat6 is the number of twists per inch. The fact that the wire is twisted pair is what helps to remove noise (not the crappy aluminum shielding). The only place where the wire isn't tightly twisted is wherever there is a splice or junction. As long as it's a nice, continuous run of cat6 along the power line, there should be no data problems. If you have a cat6 junction sitting on top of the power lines, you will have a problem.

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What are some good solutions to space efficient stairs?

I'm trying to figure out how to put some stairs in this small house I've been wanting to build, regular stairs take up too much of the floor plan for my taste, but spiral staircase would be difficult to bring stuff up and down.

The current idea is a 24 foot diameter octagon, but I could possibly expand it to as much as 28.

I've considered a staircase like pic related, a very wide spiral staircase, but the particular one in my pic has about a nine foot diameter which still ends up taking a sizable amount of space.

I don't want to put in anything too steep or narrow because I want the house to be comfy.
most efficient is a 600mm wide dog leg staircase
forget about your fancy shapes
I think a dog leg stair that 3 or 4 feet wide could look nice and would take up less space than the spiral design, but how are they for moving furniture? I don't want to have to bring my couch in through the window.
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Forgot pic, I was thinking maybe something like this
forget about taking large things up stairs.

you get some victorian hoists made and put on your house. next to an oversized window that can open up wide. Anything large that needs to go up. will go up outside and through the window.
That's awesome.

Say you were to make your own siphon brewer; wanting to improve on the design, how would you do it?
Still utilizing the concept of using the vacuum created when the boiling flask cools down, but not restricted by making something practical/small.

Ie: how would you make the cleanest coffee, using the siphon idea?
1 reply omitted. Click here to view.
I was thinking about putting a stopcock inbetween to manually control the brewing time, and using a two necked boiling bottle with a stop cock so I can just funnel the coffee straight into a cup.

Perhaps two filters as well, one permanent steel/glass one, and one exchangeable thinner paper one.
I'm not sure I'd want to contain boiling I've never used one of these pots, but I've seen that you can cycle the water from bottom to top multiple times, or you can keep it on the burner longer to keep the water in the top section for longer. If you want to control brewing time, do it with the heat source.
Why would you do that? You'd end up with incredibly bitter coffee. And it would be a waste of heat, if you could just contain it in the brewing pot as long as you'd want, and then open to use the vacuum to pull it back.
And you'd end up with a glass pressure cooker.
Not really. Unless I don't know what a glass pressure cooker is.

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This method was never used before but you can try. Just focus on your screen.
I don't get it
Well, that was anti-climactic.

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Hey Anybody else think that harbor freight is god's gift the world
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Harbor freight how I love thee. Let me count the ways:

Compound sliding miter saw
Big hammer drill
Hydraulic lift cart
Roofing nailer
Needle scaler

I've got a bunch more but that's all I can think of now.

Only thing that's really shit the bed was the needle scaler, which they just replaced for me. I think I wasn't oiling it properly. Also, a buddy bought a super sale 1500lb winch for a trailer bed and it got fucked hard. Too weak, incorrectly mounted, didn't straighten the wire or align it properly.... Entirely his fault, but still....

Basically I love the place.

Only ever did craftsman professional air compressor, and has been excellent to me for 10 years heavy use.
Justify your Walmart purchase all you want :)

I will continue to buy quality made not in China
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This thing is fuggin sweet. Can lift stuff into and out of my truck bed super easy now on my own (wood stove, air compressor, etc). Also use it as a motorcycle lift to do work on the bike.
>"Everything from China is automatically bad."
>Walmart is a shit company that sells shit products despite being the second largest company in the world by Revenue.

Continue spouting your maymays and wasting your money.
None of it are maymays broski.

China has low quality control, the company is expected to send their own QC.

Walmart sells shit for cheap and ameritards shop for price rather than quality. Its a completely known fact of life.

So get fucked poor fag.

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is it too early to start talking about haunted houses?

anyone do a "garage haunt?"

what kind of stuff do you do?
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Hey OP, i started making my spoopy Scarecrow mask two months ago, and im still not satisfied with the product. I think i will finish it up barely up to Halloween.

So, no, its not early to start. Not by a longshot.
Most annoying haunted house ever
There was an article on halloween haunted houses some years back in the St Louis (USA) newspaper...
Apparently this is a relatively popular thing in St Louis, tho I cannot find any figures online about that.
Wiki notes that the biggest trade show in the US is held in St Louis: https://en.wikipedia.org/wiki/Haunted_attraction_%28simulated%29#Business_environment

The guys who do this spend like 4 months planning it, 2 months building it and hiring people, and profit $100K + in 3-4 weeks of it being open. That's all they do for a living. The other 6 months of the year they don't have a job (tho they always do engage in research to try to find new/interesting stuff to use).

There is a lot of tricks to know about how to do everything as quickly and cheap as possible, but that it still looks good and that is legal. It is a huge amount of work to do in a very short time.
This is one of those things where I cannot imagine why the fuck someone would spend all this time and money on something like this, but god damn am I glad that they do. Shit's fucking awesome.
True, the acting is way more important than the props.

Personally, I'd just take a tip from blackout haunted house and diverge from the typical Halloween genera a little bit. I'm talking simulated kidnapping, humiliation, especially sexual humiliation, hand cuffs and wet tee shirt over the head, pin them down and tattoo their neck with a tat gun that doesn't have any ink, force them to shoot someone (with blanks of course). You know, the usual stuff.

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I made the pair of tongs on the right tonight. And the pair on the left about a year ago. I also made the hammers and the handles. Post your nicest blacksmithing work and/or ask blacksmithing questions.
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alright you win just tell me why they make bad knives. Besides the whole temper thing.
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I made this in 2012, it was my thesis in artisanschool
>get on my level
Swedish coal was shipped all over the known world. Had some interesting properties like high concentrations of moly and chromium

is that leaf spring brand new, or is it off a truck that's done 250,000 miles over rough roads hauling lumber, and been cycled 10 million times? is it riddled with micro-fractures from those loads, or completely fresh?

You cant tell.

What about what steel it is? well you might be lucky and know its a spring from a '93 Ford. But you might not know what its from. Even if you do know, you dont know what steel specification was used on that model. The auto mfrs may not publish the data. They may not even have fixed alloy specs at all. They might change the composition of their springs from run to run depending on cost and suppliers.
It might well be 5160. but what if they had a large batch that's actually a case-hardened (it happens!), or are an entirely different spec.

you cant tell.

then there's the whole time/cost thing. yes, you might well get some coils from a dodge that are 1095 for free. but how much time is it going to waste, straightening out a section of coil. when you can buy a straight flat bar, that you know is fresh, or even a round bar if you really must, for a pittance? Unless you're doing it for yourself for fun, you're wasting time and money.
Not the guy you're arguing with but
>but how much time is it going to waste, straightening out a section of coil. when you can buy a straight flat bar, that you know is fresh, or even a round bar if you really must, for a pittance?

Why spend time working the steel into a bar when you could just buy it that way. In fact, skip the bar, just cut your knife out of a sheet. Actually fuck that, you can buy a knife blank for a few dollars more. You know what? I actually just bought a knife off amazon, fuck everything. Also, I didn't even really need a knife, but all the time I saved was worth it.

>Unless you're doing it for yourself for fun, you're wasting time and money.

I actually choose all my hobbies based on how not-fun they are while costing me the most amount of time and money possible.

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Guys, I'm sweating bullets... can one you car experts/aficionados pls help?

I wanted to go to work today and started the car but it wouldn't move when I put it in drive. I opened the hood and noticed the giant leak under the car.

Car is a 2006 Toyota Corolla. It was leaking red liquid (I'm guessing antifreeze) because the hose clamp on one of the three hoses at the bottom of the radiator came loose and the hose was dangling.

Can I replace the hose clamp, buy a bottle of antifreeze and fix this?

Why wouldn't the car wanna move? Did radiator hose mess up transmission? Will adding new liquid fix this?

Thank you!!!
26 replies and 1 image omitted. Click here to view.
oh, and if your hose under there is cracked as shit, it's just going to happen again soon enough. If so, just go ahead and buy a new hose, too. Now's a good time since it won't spurt too much more oil on you when you change it. Lucky for you it's the weekend!
and one more thing because I care: if you jack up the car, put it on jack stands before you get under there. Never ever trust a jack with your life.
Protip: Toyota's use blood red antifreeze.

Reconnect hose, replace clamp, check coolant level, if low, refill with correct coolant in correct ratio.

If coolant level isn't low:
Reconnect hose, replace clamp, start car, check transmission fluid level, if low, refill with correct fluid.

As for why it wouldn't move, could be some sort of computer safety issue too.
The fact that its a hose clamp means it SHOULD be coolant line. and yeah toyota uses a faggy red antifreeze

if it wont shift into drive? transmission fluid is low but the fluid in cooler line shouldnt have been enough to fuck it up unless it blew while driving,

>could be some sort of computer safety issue too.

im not sure if thats a thing yet. and he would have gotten a barrage of engine lights
>im not sure if thats a thing yet. and he would have gotten a barrage of engine lights

No clue, I don't often work on newer cars and have no experience with Toyotas.

Post more like these!
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I loved that book as a child. It taught me a lot.
Maybe I'll reread it.
ITT: /diy/ turns into /mu/
Only niggers haven't evolved enough to drink milk yet
In an emergency, you can fire .410 shotgun shells from a hot glue gun.

So I have been renovating a mobile home I got for free. We redid the drywall and I started painting, but you can very clearly see the mudding tape through the paint, similar to pic related. How can you fix this? Do I have to take the paint off and remud?
Can anyone give me some advice?

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Has anyone ever heard of a rocket motor using smokeless powder as a propellant? It seems it would just blow up, wondering if anyone knows or has a schematic.

Figured this would be a relevant diy thread
Nitrocellulose has been used in some rockets. No idea what additives (if any) were used with it.
It depends on the powder, which needs to meet a few basic qualifications first - things like being solid (maybe through a binding agent), having a subsonic burn rate (ie: is a low explosive), and preferably easy to ignite. There's more to it, but these are just off the top of my head. Out of curiosity, what's the end goal of this rocket?
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many things that burn quickly or explode as powder can be used as rocket fuel, if they are compressed into a solid fuel grain. Many top military rockets even utilize high explosives as the fuel. Old Russian rockets used hydrazine. Nasa boosters used APCP, which is ammonium perchlorate, aluminum, and a plastic binder.

For an amateur rocket, I would suggest black powder in a paper tube. repercussions in the event of failure are small, and the components are cheap.

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Can i glue these two together to drive my coffee grinder with an electric screwdriver?
The hexa head is chrome vanadium, the penta head is steel.
2 replies omitted. Click here to view.
naturally, as long as you dont use cheap wood bits.
steel putty should work.
OP, how fast if your screwdriver?
Everyone here is missing the most crucial element: you're not ging to get enough RPM to make this work.

Consider using something like an angle grinder, or dremel meme even. I think even a drill or circular saw would be too slow.
>enough RPM to make this work
For this application, RPM doesn't make a fuck. Torque, on the other hand, now that's important.
the slower the RPM the better, when the burr gets hot it starts to weaken the aromatic stuff

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Is your job going to be fully automated in 20 years, /diy/?
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Robotics Engineer.
15 years until we have AI capable of designing better robots than a human.


Not in my lifetime.

About the only thing they've automated, aside from production of parts (which are usually hand assembled), is key generation. Mul-T-Lock has what can best be described as a "belt fed" key machine that cuts keys for large orders. Cylinders are still keyed by hand.

But to create something capable of automating my daily tasks? No, never. I literally have no competition. Access control fucks can't do what I do but I can do what they do because a monkey could do their job; there is no craftsmanship with pulling wire or tying it into a panel. Troubleshooting is childs play too.

If you work on access control or low voltage work in general and think you're hot shit, you're not. That's why there are too many of you and not enough jobs.
Camp Director

I hope so, Robot Camp sounds awesome.
Dank af
Being a ME I don't think so.

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