Earthstone Clay ES 60 Smooth Textured Crank 100 KgEarthstone Clay ES 60 Smooth Textured Crank Available in 25 Kgs bags. Minimum order 100 Kgs. A fine grogged alternative to our ES 50 (Crank), offering a finer surface and closer texture. This clay should appeal greatly to hand builders and sculptors who require a warm, plastic clay with excellent green strength, but need a smoother finish than standard cranks can offer. It is suitable for reduction firing, raku etc. It fires 1120C 1280C and gives