I’d like to cast the same style ring in several different sizes
using the lost wax process. I understand that I should expect 8-10%
shrinkage (according to the Caster I like to use) which would be an
average of 9% shrinkage. I’m casting in sterling.
For example, if I wanted to make a size 6.5 ring should I calculate
it in this manner?: 16.8 (internal diameter) x 1.09 = 18.3. 18.3
would be the increased internal diameter of a wax model since it
would shrink about 9%.
Would this be a correct way of going about it?