Crucibles have always been used for the melting of metals and other minerals by many cultures worldwide. People use crucibles to melt down glass, gold, iron, silver and brass. Once melted, these minerals have been used for tools and jewellery for centuries.
Crucibles need to be thoroughly cleaned, as leftover chemicals or waste residue can cause dangerous and harmful effects when the crucible is used again. Crucibles should be heated carefully before materials are deposited inside. Crucibles should also be left to cool properly before cleaning.
Clay crucibles are baked and modeled on other pots. Metal crucibles are welded and in many cases shaped from old pieces of metal. Crucibles have to be manufactured in extremely high-heat conditions to ensure that they can withstand high heat when being used.
Crucibles have existed since 7000 BC. Many ancient communities throughout the world, molded and used crucibles to create their tools and weapons. Egyptian, German and ancient Chinese communities utilized crucibles for the manufacturing of jewellery and tools.