Plaster of Paris Alternatives | eHow
Aug 30, 2017· Gesso is a mix of plaster of Paris and glue used as a surface for painting and as a base for low relief or carved surfaces before painting or gilding. Alternatives include chalk and water, lime and water, soy powder and water, acrylic undercoat from the hardware store, matte medium or gelatin. ... hard rock such as limestone and granite, softer ...