DiamondCore Hole Drills (Sold Individually) - DiamondCore Tools
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DiamondCore Hole Drills (Sold Individually, 3mm - 100mm)


DiamondCore® Hole Drills can be used to make holes in bisque or high-fired ceramic, tile, or glass. These hole drills allow you to create a hole after the final high-temp firing without having to calculate shrinkage. 

*Select a specific hole drill bit size above to view the corresponding product image


  • Diamond hole drills for ceramics
  • Select sizes: 3 mm through 100 mm diameters
  • Individually priced


  • Create holes in bisque or high-fired ceramic, tile, or glass
  • Drill holes for plugs, hanging pieces, a drain hole for a plant
  • Make holes for fountains, sink basins, fittings, fixtures, etc.


  • Create a hole after the final high temp firing
  • No need to calculate shrinkage to get the desired size
  • Long lifespan if used properly with water
  • Dust is controlled with water use
  • Shaft size for normal household 3/8" cordless drill
  • As the tool wears, a new layer of diamonds is exposed
  • Much longer lasting than diamond edge hole drills


    • Use all safety precautions
    • Always use safety goggles
    • Always check to remove the core after each drilling
    • Make certain that debris does not get into moist clay
    • Always use water to maximize tool life and control dust
    • Use a normal cordless drill and avoid getting water in the drill
    • Do not attempt to force or pry with this tool
    • Keep out of the reach of children

    Note: Keep the diamond section of the drill bathed in the water while drilling. Start at a slight angle to get started, then tilt upright and use light pressure and a gentle rotation motion. “Let the diamonds do the work.” For longevity, use water, high speed, and gentle pressure. Overheating the tool will decrease tool lifespan and alter the tool shape.