SO I did the unthinkable and bought some *cough *cough bronze rod on fleabay. Now there are about 100 different flavors of bronze, but I thought lets try it. Cheap enough right? But first I had to learn not to try to weld the bronze bushings and other assorted crap from Ace hardware. That stuff is loaded with zinc and goos the welding table with some yellow nastiness. Here is the rod I got from fleabay. I would bet my left nut this stuff was copper, but the seller talked to me (nice guy) and I think he might be right. (the possibility of a copper rod vs bronze rod mixup still exists) He called this stuff C544 Phosphor bronze 80-85% copper. The silicon bronze I'm running is 95% copper. Funny how his stuff looks and welds more like copper. Guess I should have stayed awake in chemistry class. Lesson learned.... McMaster Carr, Never a question what shows up on your doorstep.