I have a lincoln 125HD from Lowe's. It welds nice and purdy on angle iron. But when I was welding on this tubing with "taiwan" printed on it. It really blew chunks. I had to turn the heat way up and just a tad up on the wire feed. I am using the wire from lowes too. Oh, another thing. I keep blowing the 20 amp breaker after a while of welding. It blows more often when welding on the "taiwan" tubing.
CORRECTION: I got kinda happy with the numbers when typing. I meant 120v, 20 amp breaker