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

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To repair a pierced mold

pairing If the molded animal pulls of in certain places, moves from the place you had fixed it, or has not completely died, or if you didn’t fix it well with the iron pins or with the melted wax, or if the animal hasn’t the right thickness on the outside at the relief, or if it is pierced, instead of removing the animal from the mold, peel away the weak parts, or the pierced part, and make holes all around these parts, then dip the back side of the mold, quickly cast onto this place with the same soaked sand which will go into the holes, the cast will adhere to the first cast. But you will have to lute this spot afterwards.