Advanced Aluminum Welding ??

[ammoyer]

I usually turn "up" (more penetration, less cleaning) as high as the material I'm welding at the time will allow. Usually dialling back a little when I see little black impurities in the bead. I looked at a Stef's oil pan today and the weld had the same thing I was talking about, the whitish frosty coating next to the bead on the parent metal. I'll see if I can get a pic or two and post.