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Looking for a small and portable kiln that can melt up to an ounce of clean placer gold out in the field or at home? The Kwik Kiln Cupelling Kit is a portable propane-fired kiln designed to do just that. Kit includes: 3.5′ tall x 4′ in dia kiln, 4 premium bone ash cupels, stainless steel mini tongs, instructions â¢ The Kwik Kiln is 3.5′ tall x 4′ in diameter and consists of a 1′ base layer and 1.5′ kiln chamber – all wrapped in a stainless steel jacket to keep it together. The lid is 1′ thick. The chamber has two different size chamber pieces, one of which is beveled, configured for cupelling. Two torches are needed to create the swirling heat effect (see photo). Can be used to perform scorification assays in the field, too. Propane bottles and nozzles NOT included. NOTE: This cupelling kiln is for cupelling the lead prill after doing a fire assay. Cupels absorb lead in the prill. Cupels are not to be used like a crucible.