How To Cut A Round Hole In Stone With Diamond Core Drill Bit

In many fields such as construction, decoration installation, gardening and landscaping, and industrial processing, it is often necessary to make precise and neat round holes in stone. This kind of operation requires extremely high sharpness, durability and precision of the tool, and the diamond core drilling bit is the first choice for this job.

Diamond core drilling, diamond is the hardest substance in nature, with ultra-high hardness and wear resistance, can efficiently cut any hard rock (such as granite, quartzite, etc.), 60% more efficient than ordinary alloy drill bits

Tools to prepare

1. Diamond core drill bit (specifications depend on the specific hole diameter requirements)
2. Handheld or vertical drilling machine (matching drill bit installation)
3. Water source or coolant (keep cool, extend tool life)
4. Protective equipment (goggles, gloves, earmuffs)
5. Clamp or positioning device (to ensure accurate hole position)
6. Determine the type of stone
   Different stones (granite, marble, bluestone, etc.) have different hardness, so it is crucial to choose the right grade of diamond drill bit. Generally speaking, hard stones need to be equipped with diamond tools with high concentration and strong binding agent.

How to drill hole in granite countertop

1. Determine the hole position
   Use a marker to mark the center point of the required hole on the surface of the granite countertop. Templates or center guide rods can be used to improve positioning accuracy.
2. Fix the workpiece
   Fix the granite countertop firmly to prevent it from sliding or vibrating during drilling. It is recommended to use a clamp or vacuum base.
3. Start drilling
   Slowly contact the diamond core drill bit to the granite surface, and first punch out the positioning circle at a low speed to prevent slippage.

Gradually accelerate, but keep a constant speed to avoid excessive pressure. Do not push hard to avoid burning the drill bit or breaking the edge.

4. Keep it cool
   Continuously inject water to cool the entire drilling process, which can not only reduce the temperature, but also remove the debris and improve cutting efficiency.
5. Complete coring
   When the drill bit has completely penetrated the granite countertop, remove the core and clean the edge of the hole to check whether the hole size and roundness meet the requirements.