A professional who tends machine that mixes and molds ingredients, using molding table, to make writing chalk. Respnsibilities include:

• Weighs plaster, dyes, and other materials, according to formula.
• Places material in agitator and starts machine to mix ingredients.
• Pours mixture on molding table and smooths it over inlaid holes, using paddle.
• Pushes ejector button to remove hardened chalk from holes.
• May be designated according to materials molded as crayon-molding-machine operator.