Of course you're right about what duty cycle is, and a low duty cycle I would think would be a problem for a professional welder. However, I had a little 120 volt "Miller de Mexico" stick welder that always did what I needed to do, and it had a 10% duty cycle. [img]/forums/images/icons/laugh.gif[/img] I like frequent coffee breaks, but it did admittedly occasionally provide more of them than I needed. [img]/forums/images/icons/laugh.gif[/img]