(re messages in December '01) Try polycarbonate resin (GE Lexan or equiv). This is the shatterproof window glazing material, be sure it isn't just acrylic (Rohm & Haas Plexiglas or equiv), although that might work as well for this relatively undemanding application. Cheap, lightweight, easily trimmed etc at home, safer to work with, unbreakable (bulletproof?) in the field. Use crocus cloth, available at your local hardware store, lubricate with white kerosene. G Penate was looking for something finer than 600 grit. Crocus cloth is equivalent to about 1200 grit.
Dick Gifford
