Drilling techniques: How to drill granite concretes

Here's my tips in drilling granite concretes using Diamond Core Bit drill. Stuffs needed: 3 cm granite, Wet polisher, Dry Masonry or Wet diamond core bit drill and water suction cup.

Steps when drilling granite concrete without water:

Touch the granite with an angle then move straight gradually.

Drill speed between 2000 – 4000 RPM (Rotation per minute)

Apply some pressure. Let the core bit do the work.

Move the bit in a circular motion to let dust out.

Apply less pressure before drilling through

You can drill a hole in less than a minute

Steps when drilling granite concrete with water:

When not using center water feed, use a suction cup with pour water.

Drill a shallow mark first.

Use water suction cup to contain water.

Water will cool down the core bit and extend its life.

Move the bit in circular motion to let slurry regiments out.

Reduce pressure in the end.

That’s all folks and watch out for our next post about drilling techniques.