Hi, I am a jeweller so I need the detail...
I have cast the FUD on silver and I had very good results. Also if you cast in gold due to the SG of gold it will be even better. The only think is to let more time to 'de-wax' the flask. Also I use the old cerntifuge which is very-very good. ( I had tried the vaccum casting with systems and other good staff and the results were unacceptable). After that you can mold on a rubber mold the object. Also I tried the 'white strong' material to mold it (without the preparation of casting) directly on the rubber mold. The results was... disappointing. The surface of the ''white strong'' is porrous and the rubber gets into the object. After I 'opened' the mold the object was okey. no bending no cracking but I pulled it out not so easily as if it was a metal object. So I am sure that it would be a bad idea to cast directly the white strong&flexible. Also as a preparation was to ''polish'' with some lack or toluene to dilute the raugh surface, even to burn it. Nothing happened. (okey burning was the destruction) In conclution I think that the best proccess is printing in FUD, (if want you can design a little thicker the surfaces that are going to be polished), cast in silver, finishing polishing, rubber mold, and the road to the production is open.
Last edited: Sep 24, 2012