Large vintage industrial 1994 cowboy rough cut 1363 rubber negative Doc Holliday mould to make a negative plaster mould with.With the plaster mould you can make a ceramic slip cast figurine, in this case a figurine of a 13" Trail Boss cowboy.Slip casting is a ceramic forming technique for pottery and other ceramics. Liquid clay body slip is poured into the plaster mould and allowed to form a layer, the cast, on the inside walls of the mould. It gives very precise and consistent shapes, and is now the most common technique used for commercial mass-produced pottery, although it began as a technique for fine pottery, especially porcelain.In the rubber it reads, in negative:ROUGH CUT 1363 TRAIL BOSS Mold © 1994 DOC HOLLIDAY.