Pitch Bowl 8″” forming and design work. Fill with pitch: https://www.capewatch.co.za/product/jewellers-pitch/
Pitch is an adhesive that is very dense and has about the same ductility of lead at room temperature. When warm it becomes fluid and sticky. Its main purpose is for work holding in the arts of chasing and repousse, engraving, stone setting, and metal carving to name a few.