Plain Court Plaster
Plain court plaster hat will not stick and remains flexible: Soak
Isinglass in a little warm water for twenty-four hours, then evaporate
nearly all the water by gentle heat. Dissolve the residue with a little
Proof Spirits of Wine, and strain the whole through a piece of open
linen. The strained mass should be a stiff jelly when cool. Stitch a
piece of silk or sarcenet on a wooden frame with tacks or thread. Melt
the jelly and apply it to the silk thinly and evenly with a badger hair
brush. A second coating must be applied after the first has dried. When
the both are dry apply over the whole surface two or three coatings of
Balsam of Peru. This plaster remains quite pliable, and never breaks.