Whats the best Low/no shrink materials for silver mold casting

[Ant]

What is the best wax, latex and plaster or materials to use instead with no shrink that make high detail molds for casting silver/copper jewelry. Thanks in advance.

[Dennis]

Two part silicone, but of course the wax will shrink. However if you are having you work cast elsewhere, then send your master to the casters and they will do the copying. Dennis.