The diamond core bit is used to drill holes in:
Grade 5 porcelain (hardest)
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.
Tightly fasten the diamond core bit in the drill's chuck.
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.
A notch will be made (this is normal). Gradually move the drill from 45° to 90° and continue drilling until finished.
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.
An indication of the correct spindle speed:
|DIAMOND CORE BIT DIAMETER||SPINDLE SPEED|
|More than Ø12.0mm (>10.0mm)||less than 400 rpm|
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