Finely-ground borosilicate glass (coloured by trace metallic compounds) which melts at 800 to 820 °C is fused to the surface of certain metals. Kilns may be either electric or gas fired but some work can be done with a gas torch.

This guide gives an overview of the types of things that should be considered when planning an activity that uses metal based materials. 

Stone cutting: A diamond-impregnated saw blade is used to cut semi-precious stones and minerals. Stone grinding: The cut stone is ground and polished to a high surface finish.

Finely-ground borosilicate glass (coloured by trace metallic compounds) which melts at 800 to 820 °C is fused to the surface of certain metals.