Perfect mold for sand casting rings.XL Sizes 12-16Available in 4 WidthsRings are 3mm ThickResin PrintedReusable with Sand CastingCarvable (solid resin), can be burned out in a kiln for Lost Wax Casting Sand Casting Ring Blanks - Half Round - XL Sizes 12-16C$11.00PriceWidthSelectQuantity*Add to Cart