Preparing Pigments and Dyes

Preparing paints at home requires grinding the source material to a fine grade. Materials can be initially ground with a mortar and pestle but fine grinding is best done with a muller on a flat surface (as pictured). In the case of lakes prepared from dyes, the dye is prepared and then precipitated onto an inert substrate such as alum which can then be ground in the same way minerals are treated.

boy with muller
Laurie, A.P. Facts about Processes, Pigments and Vehicles: A Manual for Art Student. London; New York: Macmillan, 1895. Crerar Library 751 L37