Borax Flux Melting Gold Granular Soldering Glaze Crucible Casting Acid 1lb New
Borax Technical Grade Size: 1lb bag this is Borax Pentahydrate in the Granular form. Comes in a Sealed Plastic Bag Use this to melt your scrap gold, silver, and platinum. Use this to glaze ceramic crucibles before casting or melting Make your own flux for melting, casting, or soldering. Borax when used in melting of gold and silver helps to dissolve oxides and other impurities and produce a fluid borate slag that collects on the surface of the molten metal. This slag is periodically removed, by use of a carbon-graphite, ceramic, or clay stirring rod.