Silicon carbide also known as carborundum is the hardest common abrasive grain, measuring 9.5 on the Mohs scale, that’s very close to a diamond. This abrasive block when held at 45 degrees and pushed firmly, will remove the glaze excess from a kiln shelf.

Be safe, wear gloves and safety glasses when using this tool.

Size: 100mm x 25mm x 13mm

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