A friend has asked me to try to replicate a copper ring he has had
for many years. It is now a beaten up old thing with a split in it
but I can’t fathom out how it was formed.
The ring has been made from a triple helix of copper strip. It is
just a band approx 4mm wide with no stone or other detail. It is
soldered in one place which suggests it was made from a strip of
twisted strips but the puzzling thing for me is that the cross
section is like a marquise shape - oval with points top and bottom.
(apols for my ignorance - I don’t know any other technical name for
this shape.) The ring is nicely rounded on the outside and curved but
less deeply so on the inside. It doesn’t have any core. Surely if it
were forged round without any internal support it would just end up
flat? Well that’s all I’ve managed to produce so far - quite a nice
flat ring band of twisted copper strip but not what is wanted!
Please can anyone help me here or direct me to somewhere that will
describe the process for me?