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Homemade welder

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hay

06-26-2001 08:41:18

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i am looking for information on how to build a homemade arc welder to handle 16 gauge up to 1/4" thick steel. are there any sites i can refer to get the actual componet schematics and some instruction for putting it all together and making it work with out electrocuting myself?. or would it be more economical just to buy a small 120volt arc welder?. i also saw on ebay a cordless wire feed welder and am wondering if these things are really any good. i do need something to take to the field occasionally to work on some of my equipment where electricity is not available. any information would be greatly appreciated.

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mike

06-08-2002 12:36:54

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Re: homemade welder in reply to hay, 06-26-2001 08:41:18

here are some excelent links with some plans and scematics on how to build a couple types of welders. to keep it cheap you may want to canabalize a bunch of old microwave ovens.

Homemade arc welder
Link

homemade wire foam cutter
Link

The Home-Brew Spot Welder
http://www.5bears.com/welder.htm

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hay

07-01-2001 11:45:23

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Re: homemade welder in reply to hay, 06-26-2001 08:41:18

thanks for all the great information. i think i will just play it safe and buy a welder.

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rasputen

07-01-2001 10:31:32

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Re: homemade welder in reply to hay, 06-26-2001 08:41:18

I have a Sears 180amp AC that my dad bought in the 60's and I run it off a generator. It has been exposed to humidity and everything except rain and it still works great. I think you would be better off to buy.
rasputen

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BlueLite

07-01-2001 07:27:14

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Re: homemade welder in reply to hay, 06-26-2001 08:41:18

I have a popular mechanics encyclodedia 1954
with an article on it but I don't have a scanner.
You would need alot of varnish insulated wire
and an old iron tranformer and a fan. The welder is of the sliding core type. But if your really interested I know where there's an old grey scale scanner I can probably hook up. I wouldn't waste my time on it though. People
needed these do-it-yourself jobs back then due
to war shortages and such. Get yourself a good lincoln and it will last your lifetime and have a warranty as well. I have a 225 amp AC that I bought in 73, still going strong. I accord lincoln welders the same respect as old antique tractors, tough and long-lived.

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big fred

06-27-2001 20:13:33

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Re: homemade welder in reply to hay, 06-26-2001 08:41:18

Well, I entered "homemade welder" in the Google search engine and got a education. Looks like serious off-roaders often find a need for just what you are describing. There are several websites showing how to do it, including the one below.

On-board welder for Jeeps using a second alternator

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BIGBADJOHN

06-26-2001 22:58:55

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Re: homemade welder in reply to hay, 06-26-2001 08:41:18

If your looking to build one, there was an article in Mother Earth News back in the 80's. A guy built a little DC welder out of a lawnmower engine, car battery and car alternator. I think he even mounted it all to the mower deck and wheeled it around. Don't know how thick a material he could weld with it though.

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Nelson (montr�al)

02-27-2005 17:58:18

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Re: Re: homemade welder in reply to BIGBADJOHN, 06-26-2001 22:58:55

Very easy to build. Search for a bosch car alternator of at least 90 amp. Remove the external regulator (black plastic box). Have something turn that alternator (lawnmover engine work good). Put 12 volts in the rotor. Just hook your welding cable to the positive stud and the clamp to the alternator. Electrode 3/32" #6011 works very well.

I made one like this with my 5hp snowblower and it works quite well. I had to change one pulley to have the alternator turn faster to produce around 70 volts. I made an electrode holder with my booster cables!

Watch out for electric hazard!!!

Have fun! Nelson

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ferrell freeman

06-26-2001 21:02:45

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Re: homemade welder in reply to hay, 06-26-2001 08:41:18

Serval years ago I,made one useing an old Lucas generator from an old IHC R190 MILITARY FIRE TRUCK .The generator has 24volt plus 110/240 volt range.For the engine I,used an old 10hp briggs engine and belt drive.

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Johnny

06-26-2001 19:14:03

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Re: homemade welder in reply to hay, 06-26-2001 08:41:18

Sounds like what you need is a used little 220 volt Lincoln cracker box, will last a life time and welds great, I inherited a Montgomery Ward that is probably 35 years old and is has never failed me!

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Kendall

06-26-2001 18:54:32

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Re: homemade welder in reply to hay, 06-26-2001 08:41:18

I bought a 120V unit from a pawn shop for 50 or 60 bucks and It works ok if you crank it up and use thin rods. I dont know much about the different welding rods you can buy but some weld better than others. If I were to try welding thicker metal I'd get a 220V unit. I dont think you can build one any cheaper than buying one. Every part you buy will be at retail price and it wont be as nice as a real one. And you might fry yourself trying.
Check pawn shops, welding stores, news papers for a used one if you are looking to save money.

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S Bogusta

06-26-2001 14:35:22

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Re: homemade welder in reply to hay, 06-26-2001 08:41:18

I bought one of those 110 stick welders, and it stinks. It was about 100 bucks from Harbor Freight. I orderd it in Nov. I got it 3 1/2 weeks later damaged from shipping, peices where also missing. HF sent me a return label 10 days later.Off to the post office 4 weeks later, i got a new welder. Wired it up, and it stinks . It's almost impossible to maintane an arc, let alone weld something. I'm gonna shoot it with my 12 gauge, at least I'll feel like I got my monies worth. In my opinion don't bother with these machines. Pick up a 110 mig from Home Depot, about 300. bucks but worth the money. For thck stuff stick with a 220 you won't regret it. Hope this helps

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Mark Kw

06-26-2001 10:04:29

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Re: homemade welder in reply to hay, 06-26-2001 08:41:18

I'm not up on the battery powered ones, last guy I know that tried one had it blow up in his face. Helped load him into the Life Flight helo for a ride to the trauma center.

I'd look at some of the small stick welders. Campbell Hausfeld along with some others make nice small machines that you can actually get to run decent with off a 5000 watt generator.

Other than that, try to locate a used engine driven machine within your budget. The old Airco, Lincoln and Miller ones can usually be had for around $200 to $500 in decent shape. Many of these have been put aside because of being out dated for production type uses and will still suffice for small work. Check it out good before you drop any cash!

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James

11-23-2002 10:37:32

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Re: Re: homemade welder in reply to Mark Kw, 06-26-2001 10:04:29

HE SAID THAT HE NEEDS TO TAKE IT TO THE FIELD!!!! THAT MEANS NO PLUG IN WELDERS. A GAS POWERED PORTABLE WON'T COST HIM $200-$700, IT'LL COST AT LEAST $2,000-$$10,000 FOR ONE!!! CAN'T YOU PEOPLE READ??? SO, IT WOULD BE MORE ECONOMICAL FOR HIM TO MAKE HIS OWN FOR $300-$500 IF HE'S USING NEW PARTS. nOT ONLY THAT, BUT WITH A WARRANTY ON A NEW(ELECTRIC POWERED, USELESS ONE TO HIM BECAUSE IT CAN'T BE TAKEN TO THE FIELD) ONE HE'LL HAVE TO TAKE IT SOMEWHERE TO GET IT FIXED, WHEREAS IF HE BUILDS IT HIMSELF HE'LL KNOW HOW TO FIX IT. EVEN OUT IN THE FIELD IF NECESSARY.

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Tom

06-26-2001 18:40:55

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Re: Re: homemade welder in reply to Mark Kw, 06-26-2001 10:04:29

For a few hundred, don't remember how much I last saw them for you can bet a small Lincoln, 40 to 225 amps AC. A great basic welder.

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