Whilst brainstorming my next project, I’ve decided on make a pair of
spiral earrings for myself. The problem I’ve run into is that with a
diameter of 6mm, the spiral would be really heavy. So to save
weight(and money), I was thinking about making them hollow. I could
either cast the spirals in two halvesand solder them together
afterwards, or I was looking for info on casting hollow pieces but
the net is rather devoid of anything. Has anyone ever done anything
like that? And how did you do it?