The top piece is actually a die made for the bead roller. The bottom part is made from a skate board wheel. Here's the details on those parts....
http://www.allmetalshaping.com/showthread.php?t=5846 We also did a smaller, end piece only windshield patch on Saturday with using only hand tools for fabrication, but had a few hiccups, so in the interest of not spending all day on it, went on to the bead roller. I'm going to try again on the hand formed version and I'll report back with the results.
