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

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Gilding iron or tin

First it is necessary to wash whatever one wants to gild in wine lees, and then wash it once again with white wine. Take three ounces of terra merita and one choppine of white wine. Boil the matter for half an hour, and apply your colors over your iron or tin, or whatever else. Then leave to dry on a sheet of paper and do not put your hand in your materials.