Perforated Rasp ~8in polymerclaytools Tapered round rasp is great

Tapered round rasp is great for shaping round mortises or for creating a spiral on a goblet stem

This unusual video takes us to the home and studios of Puerto Rican sculptor Jan D'Esopo

or interested in more complex techniques

Post curing the mold an additional 4 hours at 150°F (65°C) will eliminate any residual moisture and alcohol that is a by-product of the condensation reaction that can inhibit the cure of some resins and rubbers

but they can also be easily cleaned should the need arise

Perforated Rasp ~8in polymerclaytools Tapered round rasp is greatThe No. 92 is a perforated steel rasp for use while working in plaster. Approximate length 7 1 2".