Making and Knowing
A minimal edition of BnF Ms Fr 640 in English Translation

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Candle smoke

It allows the piece to be taken out more easily, and even if it is slightly thick, it does not stick because it has no substance. I have perfumed my core molds this way for tin and lead, and I have casted in a cold mold, but drying it well beforehand, and the piece came out quite cleanly. It is true that lead mixed with half the quantity of tin, because the medal was very thick, was very hot.