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Originally Posted by 57taskforce
Don't do it!!! You will cuss and scream when your done with it all. I tried it once when I was a teenager and couldn't afford gas for the mig. BIG MISTAKE! It's so hard to get a nice weld on sheet metal with the solid core and I noticed it seemed to be a little more difficult to control the heat, thus more warpage. Use a decent mig and you'll be miles ahead.
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Flux core is not solid wire, it's hollow...Mig makes prettier welds but if penetration is all you need flux will be fine, since it's going to be ground flush anyways. Flux is cheaper for the setup, electrode it's more expensive but machine nah. Flux is more forgiving for contaminants though from what I hear. Flux can be used in windier conditions where mig gas would blow away from pool. I built my truck with a flux core lincoln. I still want a mig, but that will come later. I've got an acetylene torch I want to learn how to braze with also.