A patterned synthetic sponge mimics a natural sea sponge when creating faux paint finishes. Such synthetic sponge is formed from an open cell elastomeric material that bears a pattern that has been created by a rotating grinding wheel that removes sponge material with a tearing action. A rotating silicon carbide, or other abrasive grit, grinding wheel preferably is used to remove the elastomeric sponge material, which preferably is made from an open cell, inter alia, polyurethane, polyether, polyester foamed elastomer. A paint roller made from the novel patterned synthetic sponge has its edges beveled.