Program a machine that applies acid to precision-etch metal and plastic.
Molds imitation marble into objects, such as desk sets, penholders, sections of pillars, and interior decorative slabs: Compounds materials in vat according to formula. Pours mixture into molds or on glass-flanged table. Dumps set pieces out of molds. Smooths objects with brick covered with moist emery, rottenstone, or other abrasive. Polishes parts with felt-covered brick. May use acetic acid solution to increase polishing quality of felt and add to luster of polished surface.