Originally Posted by
Odyknuck
Ok, I am a little confused here. The 200DX has a max of a 1/4" aluminum per spec and your only using 125 amps on 1/4"? Am I missing something here. Note I have zero experience welding aluminum.
The power required for welding aluminum is a function of the heat dissipation. For little pieces like that you don't need a lot of power. Just like for large castings, even with 1/4" thick sections you can need 300 amps or better to get a good weld without preheating. The published spec is just a baseline for typical conditions. 1 amp per .001" is considered the average requirement. With AC balance you can push that a little since you don't need to run 50%. So the 200DX is rated to 1/4" even though it doesn't make 250 amps. Just like fuel economy, YMMV.
Long arc, short arc, heliarc and in-the-dark!
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