I succeeded in making a latex mold and a polyurethane cast of a belt buckle.
This stuff is really cool: this binary compound becomes opaque and solid within minutes. Just look at it go from translucent … …to opaque. This would probably be more impressive in the form of a video.
I finally got around to making a silicone mold of a toy buffalo head, from which I cast a quick drying poly-urethane resin. The buffalo head itself came out pretty well, but I had a tiny mounting that did not come out well at all. It looks like a ravaged block of cheese.