Build for furnace / Melting silver / Silver bar / Teszt video / Short version

[@farpointstation]

Why would you use a cupel as your crucible?

[@qwethengoldrecovery]

Right now, that was what I could use that could withstand that temperature. But since then I have managed to buy 3 bricks from which I can carve melting jars and molds.

[@uspockdad6429]

That is not a cupel. That is a ceramic crucible. He should have used borax to glaze the crucible, but otherwise it should work fine. A cupel is made of Portland cement or bone ash. This is definitely ceramic. I use those all of the time when melting with a torch. And use a cupel to oxidize off lead when assaying material.