Homemade Arc Welder

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Homemade Arc Welder

Postby assateague » Tue Oct 29, 2013 7:57 am

Ok, the project's done. Started with a couple old transformers from microwaves.

Cut the transformers open, pulled the secondary coils out and re-wound with 18 turns of 8 gauge THHN.

ImageUploadedByTapatalk1383054281.091880.jpg


Then epoxied the transformers back together and mounted to a board (this will eventually get covered). Wired up with 220 in series. Made the connectors from smashed 1/2" copper pipe.

ImageUploadedByTapatalk1383054386.247541.jpg


ImageUploadedByTapatalk1383054404.289732.jpg



I bought an electrode holder, but made the ground clamp from a 99 cent clamp.


ImageUploadedByTapatalk1383054445.657387.jpg



And it works. Maybe too well. My neighbor's an electrical engineer, and he calculated it's putting out between 400 and 600 amps. Not sure, because his amp meter only goes to 300, and it blew through that in a split second. Don't know if the video will work, because it's from my phone. The cameraman also had a fire extinguisher with the pin pulled in his other hand, and the guy running the breaker (no on/off, just a 50 amp breaker) was hiding behind the door.

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Re: Homemade Arc Welder

Postby WoodyWhiffingMG » Tue Oct 29, 2013 8:06 am

BAM!

That is pretty sweet, Assa!
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Re: Homemade Arc Welder

Postby GOTDUCKS? » Tue Oct 29, 2013 8:09 am

:clapping: Damn fine job Assa. I would BBQ my arse if I tried to make something like that.
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Re: Homemade Arc Welder

Postby OGblackcloud » Tue Oct 29, 2013 8:18 am

That's pretty good assa :thumbsup:
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Re: Homemade Arc Welder

Postby D Comeaux » Tue Oct 29, 2013 8:26 am

I was a welder by trade in my younger years and can't say I've seen someone make a welding apparatus like that. That's pretty neat assa :thumbsup:
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Re: Homemade Arc Welder

Postby Bill Herian » Tue Oct 29, 2013 8:32 am

By this time next year you'll have a transom sticker on the hybrid that reads "My other hybrid is a tank."
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Re: Homemade Arc Welder

Postby waterfowlman » Tue Oct 29, 2013 8:46 am

Very cool Jim. :thumbsup: :thumbsup:
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Re: Homemade Arc Welder

Postby Botiz630 » Tue Oct 29, 2013 8:48 am

What could possibly go wrong?
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Re: Homemade Arc Welder

Postby beretta24 » Tue Oct 29, 2013 1:45 pm

I like it! How thick of sections do you think you can weld with that?
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Re: Homemade Arc Welder

Postby aunt betty » Tue Oct 29, 2013 2:08 pm

AT, just change your name to MacGuyver.
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Re: Homemade Arc Welder

Postby Locked&Loaded » Tue Oct 29, 2013 2:09 pm

Assa is DHC's mad scientist.
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Re: Homemade Arc Welder

Postby aunt betty » Tue Oct 29, 2013 2:12 pm

Locked&Loaded wrote:Assa is DHC's mad scientist.

The hard part of his welder is figuring out how many turns of wire...
He had to have had some help or maybe he looked in a physics book.
Just getting it right in one try is a...miracle.
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Re: Homemade Arc Welder

Postby assateague » Tue Oct 29, 2013 6:08 pm

beretta24 wrote:I like it! How thick of sections do you think you can weld with that?



I think probably 1" plate steel. I could start building a battleship, until the shop burned down. I really need to figure out a way to dial down the amperage without buying anything. Got something in the works, but won't be able to test it until tomorrow.
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Re: Homemade Arc Welder

Postby assateague » Tue Oct 29, 2013 6:08 pm

aunt betty wrote:
Locked&Loaded wrote:Assa is DHC's mad scientist.

The hard part of his welder is figuring out how many turns of wire...
He had to have had some help or maybe he looked in a physics book.
Just getting it right in one try is a...miracle.



YouTube, Betty. Anything is possible with YouTube.
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Re: Homemade Arc Welder

Postby beretta24 » Tue Oct 29, 2013 6:43 pm

assateague wrote:
beretta24 wrote:I like it! How thick of sections do you think you can weld with that?



I think probably 1" plate steel. I could start building a battleship, until the shop burned down. I really need to figure out a way to dial down the amperage without buying anything. Got something in the works, but won't be able to test it until tomorrow.

Any ideas I have would affect the peak amperage...spill the beans when you get it figured out.
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Re: Homemade Arc Welder

Postby Cujo1 » Tue Oct 29, 2013 6:45 pm

assateague wrote:
beretta24 wrote:I like it! How thick of sections do you think you can weld with that?



I think probably 1" plate steel. I could start building a battleship, until the shop burned down. I really need to figure out a way to dial down the amperage without buying anything. Got something in the works, but won't be able to test it until tomorrow.

Dimmer switch rheostat
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Re: Homemade Arc Welder

Postby Montanafowler » Tue Oct 29, 2013 6:46 pm

from the looks of the slag coming off during the arc, you need to get your rod tip much closer to the parent metal. if you're putting out that much amperage, you're pretty much unlimited in what rod you can burn. 6013 is a good learning rod, and it's decent for flat welding. 6011 is more of a vertical rod as well as 7018. those three are probably the most common sticks you'd find in any metal shop.
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Re: Homemade Arc Welder

Postby Indawoods » Tue Oct 29, 2013 8:21 pm

assateague wrote:
beretta24 wrote:I like it! How thick of sections do you think you can weld with that?



I think probably 1" plate steel. I could start building a battleship, until the shop burned down. I really need to figure out a way to dial down the amperage without buying anything. Got something in the works, but won't be able to test it until tomorrow.


leads look small gauge, that's not helping. try 5/32 rods or 3/16. I think you could weld 1 1/2 plate as hot as it's running.

fyi, look up welding with deep cycle 12 volt batteries if you haven't yet. handy for in the field.
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Re: Homemade Arc Welder

Postby LongTom » Tue Oct 29, 2013 10:21 pm

HAHAHAHA That's some good stuff!
I don't think it is even 300 amps or your rod wouldn't have lasted that long and your ground clamp would have gone soft.
200 amps will turn a 1/8th rod red like that in 5 seconds.
I got to hand it to you, it takes some big balls to strike the first arc on that "Jack Kevorkian" welder.
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Re: Homemade Arc Welder

Postby Blackcloud870 » Tue Oct 29, 2013 10:24 pm

Assa all I can say is you are one resourceful, brave, funny sumbich. :lol:
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Re: Homemade Arc Welder

Postby possumfoot » Tue Oct 29, 2013 11:05 pm

Cujo1 wrote:
assateague wrote:
beretta24 wrote:I like it! How thick of sections do you think you can weld with that?



I think probably 1" plate steel. I could start building a battleship, until the shop burned down. I really need to figure out a way to dial down the amperage without buying anything. Got something in the works, but won't be able to test it until tomorrow.

Dimmer switch rheostat



that would burn up almost instantly..

looks like you need heavier rods too.. your burning way to quick, along with too hot.. a ceramic voltage reducer would probably work, but would add another fire/shock hazzard..
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Re: Homemade Arc Welder

Postby TrapperRob » Tue Oct 29, 2013 11:09 pm

Obviously a trapper...
Only a trapper would do this... :thumbsup:
Why buy the proper equipment when you can Afro engineer your own...
A visionary I say...
50/50 greatest idea ever...
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Re: Homemade Arc Welder

Postby Indaswamp » Tue Oct 29, 2013 11:13 pm

possumfoot wrote:
Cujo1 wrote:
assateague wrote:
beretta24 wrote:I like it! How thick of sections do you think you can weld with that?



I think probably 1" plate steel. I could start building a battleship, until the shop burned down. I really need to figure out a way to dial down the amperage without buying anything. Got something in the works, but won't be able to test it until tomorrow.

Dimmer switch rheostat



that would burn up almost instantly..

looks like you need heavier rods too.. your burning way to quick, along with too hot.. a ceramic voltage reducer would probably work, but would add another fire/shock hazzard..

Yup.
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Re: Homemade Arc Welder

Postby TrapperRob » Tue Oct 29, 2013 11:16 pm

Indaswamp wrote:
possumfoot wrote:
Cujo1 wrote:
assateague wrote:
beretta24 wrote:I like it! How thick of sections do you think you can weld with that?



I think probably 1" plate steel. I could start building a battleship, until the shop burned down. I really need to figure out a way to dial down the amperage without buying anything. Got something in the works, but won't be able to test it until tomorrow.

Dimmer switch rheostat



that would burn up almost instantly..

looks like you need heavier rods too.. your burning way to quick, along with too hot.. a ceramic voltage reducer would probably work, but would add another fire/shock hazzard..

Yup.


Stop with the "advice".
You're doing great Jim...
Keep it up.
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Re: Homemade Arc Welder

Postby Indaswamp » Tue Oct 29, 2013 11:28 pm

TrapperRob wrote:
Indaswamp wrote:
possumfoot wrote:
Cujo1 wrote:
assateague wrote:
beretta24 wrote:I like it! How thick of sections do you think you can weld with that?



I think probably 1" plate steel. I could start building a battleship, until the shop burned down. I really need to figure out a way to dial down the amperage without buying anything. Got something in the works, but won't be able to test it until tomorrow.

Dimmer switch rheostat



that would burn up almost instantly..

looks like you need heavier rods too.. your burning way to quick, along with too hot.. a ceramic voltage reducer would probably work, but would add another fire/shock hazzard..

Yup.


Stop with the "advice".
You're doing great Jim...
Keep it up.
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