manage to make a former for bending 22mm ERW tubing. I had a 20mm former and grinded that out etc and a linisher to get the curve. its roughly 3".1/4 -3.5" radius on a 5" former. it wont have it. I think the radius is to small to get an even bend. that's probably why Hilmor only do a 8" former or there about. what do you experts think?