The experts in the field of volume and form, Lee Marshall and Phil
Poirier, believe that the small 3" volume and form dies would work
to draw seamless tubing. This technique keeps the thickness
constant, so if you started with an 18 gauge disk, your tubing would
be 18 gauge. The good news is that platinum would draw easier than
gold.
But to return to reality, first you need a separate set of dies for
platinum, so that you don’t contaminate the metal, and even more
convincing, a 3" disk of 18 gauge platinum would cost in excess of
$1500US, just to prove you could do it. Who’s first?
Judy Hoch