The flanges got formed with the tipping wheel on the bead roller, then tweaked with a..... um..... it's a piece of 1/2" round bar with a 5/8" deep slot cut into it - I use it to fold sheet metal over, like a hem sort of. I don't know what they're called.
Tipping the flange also took the curve out of the ends of the panel, but the Shrinker brought it back. I marked 1" increments on the edges of the skin so I could know where to shrink it more "7/8/9" is easy to remember.
I fiddled with the gap to make it as tight as possible so as to get a good weld in there. Zero gap = minimal distortion.
So, if my wee tap came in so I can fix my HVLP Touch-Up gun, I should have some epoxy primer on the inside, ready for welding next weekend. Which is where I was at the start of -this- weekend. Woo hoo.
- Cut the skin, plus about 1" extra for flanges
- English Wheel some curve into the panel
- Tipping Wheel on the Bead Roller to make the flanges
- Shrink the flanges to put the curve back in.