As you know, my Lincoln 175 +SP was acting up. I borrowed a Miller 175 wire feed.
Yesterday, I had the chance to weld 12 6" long pieces of channel on to a trailer frame on the outside for stake pockets. Worked fine, but as it heated up, it started acting up, somewhat like my Lincoln.
I would run a hot pass vertical travel down, then run a wide cover pass vertical travel up. .030", heat setting 8, wire speed 55-60.
My wife came home, and came over to inspect and make sure we were doing it right, so there was a chance for it to cool down. On restart, it was right back to the desirable level of hiss versus splut splut. Concentration was applied to keeping a clean tip, torch angle, stickout, small adjustments of wirespeed and heat, motion and hesitation on travel sequence, etc.
We got er done, just some looked a lot better than others. And when it would splut splut, I'd have to stop and restart and melt the ugly part.
Do these things act differently when they heat up, or do I just have some sort of vortex portal over my shop?
My electronics friend took the 175, and could find nothing obviously wrong with it. It started acting up at 40% of the load settings. Looks like time to go to the shop with it.