2Ric
I think that the original rings were not made with a plate and then twisted, the blanks are quite thick and it is very difficult to bend them. I am sure that at least all the rings of the 40s were already cast in the form of a large ring, which was then adjusted to the desired size by cutting off excess leaves.
It’s easier to manufacture than twisting a ring - firstly and secondly, it’s difficult to straighten even a twisted workpiece into an even circle, you can’t do it with your hands, you need to use a hammer or something like that, but then dents remain, so the 40x rings were definitely not made in the form of a strip.
Look how much my production practice gives me, you can see what was done and how, there is nothing to invent
P.S, more then, I now engrave assembled rings, I assure you, the rings were engraved assembled, do not see the old and unreliable bikes.
