DiamondCore 8 inch Diamond Grinding Disc Grit:240 Grit Fine Large cones are used as

Large cones are used as a witness cone on the kiln shelf to visually monitor the progress of the kiln firing

Roll slabs up to 16" wide

The welded construction helps them hold up for years of use in even the coarsest and grittiest clays

It increases strength and workability and reduces shrinkage

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DiamondCore 8 inch Diamond Grinding Disc Grit:240 Grit Fine Large cones are used asDiamond Grinding Discs ( Potsavers ) are adhesive backed, 8" diameter metal plates with diamond grit electroplated onto the metal. They need to be attached to a smooth, clean, flat waterproof bat. They remove glaze drips or grind high fired clay, bisqueware, tile or glass, or level the foot of a warped pot. Since diamond grit has a 7000 hardness rating and silicon carbide is only rated at 2400, diamonds will last much longer and out perform silicon