Bismuth Metal
Don't know if it really works well or not, bought it in order to experiment with my own mixture, and added this to an American cast metal. Produced good looking figures.
These are chunks of pure bismuth crystals, are used for lowering the melting point of Tin/Lead alloys. Add at least 30% to lower the temperature of melting point below 150C.
These crystals vary in size and shape.
Melting point is 271C or 520 F.
Don't know if it really works well or not, bought it in order to experiment with my own mixture, and added this to an American cast metal. Produced good looking figures.