Picture of Cheap Welding for Punks
Cheap homemade welders compared: AC stick, DC stick, DC spoolgun. Oxyfuel discussion.

Welding is usually the easiest and quickest way to build something.
You just put the parts next to each other and weld them.
You don't have to drill bolt holes and go to the hardware store for bolts.
Metal doesn't split like wood. It doesn't have grain and knots that make every piece different.
You can get all kinds of scrap metal for free. Bed frames, parts of old cars, etc etc.
And you can make your own welder for free or close to it.

Don't have access to a welder? LIAR!! All it takes is some junk car batteries and a welding rod.
Or some dead microwave ovens to butcher for the transformers.
Make your own industrial revolution!

Make these welders yourself!
AC stick welder,
DC stick welding with car batteries
wirefeed spoolgun with car batteries
Solar powered battery welder

This instructable is my "table of contents" for welding projects. When I do more projects I'll add more steps here to link to them.
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Step 1: Welding With Books!

Picture of Welding With Books!
The most important welding tool is... INFORMATION.
Whenever I screw up a weld, I go look up how I should have done it. Sure enough, there's a proper polarity, current, feed rate, shielding gas/flow rate, flux etc for the weld. I do it that way, and suddenly I'm a great welder.

No matter how many welding books I get, I need them all. There's some kind of Japanese-style collusion between publishers to distribute the information between all the books. None of them have all the information you need. Every book will add a lot of information the others don't have. They also tend to devote a lot of space to info you'll never need, like how to weld train tracks using an automated submerged-arc machine.

The Miller online welding calculators are really good, especially for something like TIG that has 5 or 6 different parameters.
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great spot

Nice Work Great Job sir.

This looks affordable

Awesome DIy Loved it

great work..

nice collectin dude

i love with your job

its works is very nice..

great stuff

This work is nice.


johnsonpaul2 months ago

nice collectin dude

great work

GrahamAbbey2 months ago

i totally love this work....

Rejanblink4 months ago

cant get the solar powered battery shipped to my place :-(

Cringojames4 months ago

This is amazingly useful and affordable

Davementor4 months ago

great stuff

StevenMccan4 months ago

This looks affordable

KanwarSingh4 months ago

awesome work buddy .........keep it up :)

HarryLaine5 months ago

just one word-epic :)!!!!!!!!

indiadumbells5 months ago

Great tut sir

awesome stufff

Alexisanchez6 months ago


Alexisanchez6 months ago


nice 1

this is really cool

Clint Dempey6 months ago


etcmn8 months ago

Nice, thanks for the comparison of the different types.

Hi I got 7 different sized welding tips, 2 cutting torches, 2 sets of hoses all for under $30 at various garage sales, thrift stores and from friends done with 'em. (Mostly from yard sales). A lot of the time the Mrs. is running the sale and the Mr. put some stuff out and as I am a woman too there is usually some gabbing, then a sale for them, and welding equip for me! Everyone's happy! It just takes looking around. The hoses I got at Habitat for Humanity Resale store and 1 at Good Will. Oh and Tim have you tried guitar strings yet (for filler rod)? I love your experimentation and your obvious love of creativity!
Krimm3 years ago
(removed by author or community request)
chip123 Krimm2 years ago
Is it called glue, by any chance? :P
pdub77 chip1231 year ago
^that guy^
cherze2 years ago
aluminum welding produces a very harmful smoke for your lungs. You must use a respiratory mask that brings pushed air from at least a few feets away.
1 lung full of hydrogen + 1 electric arc = many pieces of TimAnderson scattered around the countryside ... love the instructable though.
DeanGPotts1 year ago
i genuinely fear for your life!! ... but i love this project and may give it a try real soon.
skaar2 years ago
i have a mig welder, 120v plug in thing, takes more amps than the circuits in my apartment allows, so it's sitting there. it's dc output, and i've got plans to bypass the transformers to make it dc input. finding a schematic has been a tad less than easy, and i'm not up enough on electronics to figure out all the details, mostly being chicken to break something, can't afford to replace much.
so, maybe there's a generic method for finding out where the dc output is from the power supply, the heavy duty stuff is unfamiliar, and i'd guess these things are generic enough that all are familiar.
intended power source is car battery with small charger motor/windmill through alternator, that i'm more comfy with.
eric m5 years ago
Gas welding costs too much. I really don't understand the reason that torches and regulators cost at least $150. Don't forget tanks that cost another $200. And it seems less and less people are gas welding. Someone needs to make a cheap torch and rig for like $50 but i haven't seen them. Maybe someone from instructables could make a cheaper alternative homemade torch. Need less costly regulators too.
skrubol eric m3 years ago
Tanks are expensive as well because of the pressure the O2 tank has to deal with and storing Acetylene isn't as simple as just compressing it and putting it in a tank (I believe there is a liquid in acetylene tanks usually for the acetylene to absorb into.) This, I assume, is why I've never seen disposable acetylene tanks.

You can get an oxy-mapp welding setup for around $50. It's utter crap, but it can be used to weld. The regulators are.. not, they're just needle valves and it uses disposable o2 and mapp tanks. Disposable o2 tanks get expensive really quickly though, as they aren't as high pressure as the refillable kind. It's a false economy unless you only use it for a few minutes (how long an o2 tank lasts) per year.
yeah, acetylene tanks are full of cardboard soaked in acetone. another useless fact courtesy yours truly.
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