zzrodder
It ain't grey hair, it's chrome!
I would not have considered that approach - too much work. The fenders came out great. Thanks for posting the photos of the tool.
Yeah, my rolling tool didn't work as well as hoped. It would have been easier to feed thru if both bottom rollers were driven and with a gear reduction, however, I didn't want spend a bunch creating something unproven and unlikely to be used again. I just used materials I had laying around so I only invested my time in it... The big prob with it is that it didn't really stretch the metal - after a pass, I'd adjust the top roller down to give the fender a curve but it ended up rippling the edges. In the end, the biggest contribution the roller made was to give the fender it's profile and the center peak.
If I was to do this again, I think I'd just shape the fender first with the planishing hammer then give it a pass thru the roller at the end, that way the lines of the peak would be crisper and I wouldn't be trying to iron out all those ripples. The final shape still turned out OK and as fenders go, not too hideous...