Kempy, thanks for the info... I know it has been a while. We all know how back burner projects get. Looking to use the screed boards soon and thought it was time to work on them. Well they sure were dirty. A wire brush would not come close to cleaning them. I took a D/A sander with a 220 grit and cleaned the ends up. Took a little while even with that.

I bought some AZ61 off Ebay. I waited a while to get a fair deal. The screed boards are about 2" x 4". You sure need to put some quick tack welds on them. They walk out of alignment fast from the heat. I sure don't keep up with TIG welding. Kind of lose my touch between jobs. Even though, they TIGed up really nice. Welded close to Aluminum. Didn't need a whole lot of heat. But the heat sure did radiate down the tubes fast.

The 200DX is a nice machine. I think it is close to 2 years old and it has seen its fair share of projects. I am happy with it so far.

Another learning experience.