Walling-wax
a composition of wax and tallow used by etchers and engravers to make a bank or wall round the edge of a plate, so as to form a plate for holding the acid used in etching, and the like. Fairholt.
a composition of wax and tallow used by etchers and engravers to make a bank or wall round the edge of a plate, so as to form a plate for holding the acid used in etching, and the like. Fairholt.