Our dies seem to be getting quite beat up lately. Not sure if it is the stone or I need different hardener.

Gary Grosclaude, CDT · January 29, 2014

We also use Resin Rock, I have been using clear pro art die spacer from Ivoclar and it works great. It is always a good idea to exactly follow the manufacturers instructions regarding water to powder raitios because if you are using too much water it will change the density of the stone. So pretty much "that's what she said"