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View Full Version : wire feed welder - use on car body?



OldGray320i
08-20-2008, 11:46 PM
Okay, really dumb question, but I bought a little wire feed welder from home depot (MIG, with out gas - wire feed arc welder I guess....) and in the instruction booklet it cautions agains using it on a car body -

The question is, why? The current would fry the wiring? What am I missing (or not reading correctly)?

Thanks.

Broccoli1
08-20-2008, 11:51 PM
It is to cover their A.S.S if anything happens to go wrong.

Modern cars have a lotta Computer technology

Lots of discussion on the "welding on a car"-

The general consensus seems to be keep the Work Clamp as close to where you are welding.

Some say disconnect the battery- can't hurt


Welcome to the Forum.

OldGray320i
08-20-2008, 11:56 PM
Thanks for the heads up.

I'm afraid my car is no more modern than 1983, but it's fun to tinker with.

I took the front valance off, welded up some holes (metal too thin, me to slow & made 1/2 of them bigger before figuring out how to close them up quickly...), and wanted to do some work on the rear of the car, but got paranoid.

This welding stuff is a lot of fun, I'm looking forward to learning more from y'all.

Thanks again.

STwelder
08-21-2008, 01:24 AM
Mostly the wire welder you are talking about (flux core) will put to much heat to the panels and cause warping. creating more body work than you all ready had. Plug weld any patch panels or pieces you use for body working. And disconnecting the battery cant hurt anything.

OldGray320i
08-21-2008, 02:12 AM
Yeah,

I noticed that on the part I welded; since I've got additional smoothing work to do on that piece anyway I wasn't too concerned, but...

Dare I ask, what is a plug weld?

Thanks.

Mr.Bigweld
08-21-2008, 05:57 AM
Yeah,

I noticed that on the part I welded; since I've got additional smoothing work to do on that piece anyway I wasn't too concerned, but...

Dare I ask, what is a plug weld?

Thanks.

http://www.mig-welding.co.uk/plug-weld.htm Hope this helps.Welcome to the board.:drinkup:

specter
08-21-2008, 12:53 PM
As a CNC shop owner and rv repair shop I can tell you the warning they always issue when working on or near electronic of any kind that has a computer device. "Keep away from static electircal charges and welding". The static electric basically zaps you electronics likie a electromaget zaps computethe r.

What we do is disconnect onboard computer from the electric system by pulling the plug! And of course making sure that your grounding clamp is as close to the welding area as possible to minimize a static charge from the area to you computer.

Broccoli1
08-21-2008, 04:34 PM
As a CNC shop owner and rv repair shop

Got any leads for this fella

http://weldingweb.com/showthread.php?t=23385

Needs a new fuel tank for his RV

OldGray320i
08-22-2008, 12:00 AM
http://www.mig-welding.co.uk/plug-weld.htm Hope this helps.Welcome to the board.:drinkup:

I think that answered the question!

That's really cool, I'd never have thought to do that.

Thanks a bunch.

Cheers! :drinkup: