We are in the process of using Bluecast. People are going sort of nuts for it and are having really good results. We managed to cast silver and gold but platinum was not casting with the Formlabs castable resin. It was absolutely horrendous how pieces came out. It was reacting with the investment and being in the most southern tip of Africa, we do not have access to some investment powders as it is difficult to get hold of. We have now returned the formlabs castable resin and traded it for the black standard resin for some new exciting pieces! Still love the printer and the company though.