Erwin Timmers works on his new pieces - cast recycled glass knotts. Erwin fires the glass into plaster/silica molds and then chips away the plaster from the cooled glass. Hours of coldworking ensues after. Mr Timmers has engineered a 'hands-free' device to work the diamond lap wheel. Erwin's new pieces will be on display at the Craftweek DC demonstrations in the studio this week.