Bonny Doon 80-Durometer Urethane, W x D x 1/ H Burs Dyed black linen covers a

Dyed black linen covers a cardboard and polystyrene form

Easy-read vacuum gauge and handle provide at-a-glance monitoring of vacuum pressure

Mohs Hardness: 10

these stamps are durable

Bonny Doon 80-Durometer Urethane, W x D x 1/ H Burs Dyed black linen covers aUse this 80 durometer urethane pad in your form box with your Bonny Doon press to form synclastic, anticlastic and flat pieces. Urethanes are a critical accessory for use with the Bonny Doon press. Each one is specifically formulated for increased cut resistance and memory retention. Used properly, a urethane can easily last 10 years or longer. Its purpose is to provide the matching half of the form that you create in your press; it forces the metal