Tork Craft Diamond Core Bit 38mm for Tiles

R 209.00
SKU: TC180838
Ø38mm Diamond core bit


The diamond core bit is used to drill holes in:

  • Ceramic tiles
  • Marble
  • Grade 5 porcelain (hardest)
  • Granite
  • Glass
  • Slate

The diamond core cuts faster, smoother and lasts longer than any other core drills.

How to use the diamond core bit:

The diamond core drill bit must be used with water at all times when drilling. The water serves as a coolant to prevent the diamonds from overheating. The maximum allowable temperature for a diamond core bit is 500°C.

There is no pilot drill with the diamond core bit. A low rpm rotary drill with a planetary gearbox is required to be used with a diamond core bit. It is possible to use a cordless drill, but in the lowest gear setting. No hammer action is used.

  1. Tightly fasten the diamond core bit in the drill's chuck.
  2. Keep the bit steady at a 45° angle with the starting point on the edge of the assigned area to be drilled whilst the bit is rotating.
  3. A notch will be made (this is normal). Gradually move the drill from 45° to 90° and continue drilling until finished.
  4. Allow the diamond core bit to cool down completely before proceeding to drill another hole.

Water can be applied by:

  • spraying water on the surface,
  • using a wet sponge,
  • attaching a water feed device. This is necessary when drilling into a wall tile.

Please have a look at the video in the tabs above showing how to use the diamond core bit.

An indication of the correct spindle speed:

ø5.0mm 800 rpm
ø6.0mm 600 rpm
ø7.0mm 500 rpm
ø8.0mm 500 rpm
Ø10.0mm 400 rpm
More than Ø10.0mm (>10.0mm) less than 400 rpm


The tool life will mostly depend on the proper usage and the hardness of the items drilled into. It is normal for a diamond core bit to last up to 10 or more drilled holes in hard tiles. Please remember to always use water when drilling with diamond core bits.


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