hi just watched a youtube video on reversing the polarity on a flux core welder which to me means the grounding clamp is positive and the gun negative. So does that mean the work piece now has a positive potential ? what about welding on say the floor pan on a modern car with a computer...what will this do to the car computer.
Welcome! Path of least resistance. Keep the (ground / positive clamp) close to the arc. If you unhook the cables from the battery then that should break most of the completed circuits. In all probability after that you should be good to go. Only thing that doesn’t sound like it applies in this case would be welding with high freq Tig, in close proximity to the actual circuit boards. But that’s a whole different process and machine.
I have more questions than answers
Josh
Josh
flux core welders are typically electrode (gun) negative (i'm assuming gasless fluxcore) or if you got the really shitty ones its AC.la1 wrote:hi just watched a youtube video on reversing the polarity on a flux core welder which to me means the grounding clamp is positive and the gun negative. So does that mean the work piece now has a positive potential ? what about welding on say the floor pan on a modern car with a computer...what will this do to the car computer.
migs are electrode positive as they are typically set for bare wire and you have to change that over to electrode negative to run flux core.
imho throw the flux core welder in the bin and get a half decent mig.
tweak it until it breaks
wise manJayWal wrote:I read this post earlier, decided to wait for the Tweake flux core rant before posting [emoji1787]
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friends don't let friends use fluxcore welders.
tweak it until it breaks
I too abhor flux core only machines.tweake wrote:wise manJayWal wrote:I read this post earlier, decided to wait for the Tweake flux core rant before posting [emoji1787]
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friends don't let friends use fluxcore welders.
I have more questions than answers
Josh
Josh
i can understand the fun of modding a welder. i'm more than happy for you to tweak it and make it better.JayWal wrote:I'm tempted to buy a chinesium cheapy so I can relate
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but for a practical welder, its still going to be a piece of junk no matter what you do to it.
tweak it until it breaks
I take the battery cables off before welding on anything with a computer. You can also just find the computer and remove the plug for further protection or take the computer right out.
Myself working on my own stuff I just make sure I have a GOOD GROUND right nearby on the part being welded . Make sure the spot is CLEAN BARE METAL not polished rust. I’ve never burned anything out doing that.
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Myself working on my own stuff I just make sure I have a GOOD GROUND right nearby on the part being welded . Make sure the spot is CLEAN BARE METAL not polished rust. I’ve never burned anything out doing that.
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