Re: How to make 1 gram molds for gold (1/2 gram for silver) and various 1 oz shapes
Calculating the volume to an odd shape cavity is more art than science. But Archimedes figured out how to do this a couple thousand years ago. The easy way to do it in this case, would be to make what you think is about correct, cast the piece, and weigh it. Then make corrections to the scale of the drawing as a percentage of the original weight and try again. The good news is that graphite machines very easy, messy, but easy.
Jim Dawson
Sandy, Oregon, USA