MELT SCRAP GOLD & SILVER MELTING CRUCIBLE SILICA CUP TYPE + BORAX & CARBON ROD (E 15) NOVELTOOLS MELTING SET CRUCIBLE BORAX & STIRRING ROD FOR MELTING GOLD & SILVER- 18Toz - 500gram Gold Capacity Cup Type A melting set that includes a Crucible for use in melting Gold, Silver, Bronze, Copper, Brass and more. Crucible has an 18 T.oz. / 560 Grams capacity is made of fused silica can withstand temperatures up to 2500F/1,371C. Along with Borax for glazing and a Carbon Stirring rod. Crucibles should be pre-heated and glazed with Borax prior to use, which also helps extend the life of the crucible. MELTING SET NOVELTOOLS # 0311-034103