Cupellation - from cupel to SILVER bead
DIY fire assay
Silver cupellation - the full process. Cupel is made from dry portland cement . Silver contacts are then smelted with lead and refined employing the cupellation process. The lead in the form of litharge and the others base metals oxides are absorbed by the cupel, leaving the pure silver button behind.
Видео Cupellation - from cupel to SILVER bead канала OwlTech
Silver cupellation - the full process. Cupel is made from dry portland cement . Silver contacts are then smelted with lead and refined employing the cupellation process. The lead in the form of litharge and the others base metals oxides are absorbed by the cupel, leaving the pure silver button behind.
Видео Cupellation - from cupel to SILVER bead канала OwlTech
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