When remodeling a kitchen or installing a new faucet, facing a solid granite countertop can be intimidating. Granite is prized for its density and beauty, but it is also naturally brittle. Using the wrong tool—like a standard masonry bit or a hammer drill—can cause irreversible cracking in seconds.

This guide provides the professional methodology for creating clean, smooth holes in natural stone without damaging your investment.

The Essential Tool: Why Diamond is Non-Negotiable

When it comes to stone, forget the idea of "drilling" in the traditional sense. You aren't cutting through the material; you are grinding it away. This is why "force" is your enemy and abrasion is your best friend.

Diameter Dry Diamond Core Drill Bits With Brazed Rods For Hard Granite

The Drill: Rotary is King

• Forget the hammer drill. While it's great for concrete blocks, the high-frequency percussion of a hammer setting is the fastest way to shatter a granite slab's internal structure.
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The Bits: Choosing Your Weapon

Not all diamond bits are created equal. Your choice depends entirely on the size of the hole:

• For Small Fasteners (under 10mm): Use Electroplated Diamond Bits. These are perfect for precision tasks like mounting brackets or anchors. They are sharp and bite into the polished surface quickly.
• For Faucets & Sinks: You need a Vacuum Brazed Diamond Hole Saw. This isn't just a marketing term; vacuum brazing bonds the diamonds more aggressively to the steel core. This means better heat dissipation, a much longer lifespan, and a cleaner "cut" through thick countertops without the bit glazing over halfway through.

Step-by-Step Execution

Place two layers of painter's tape over the drilling area. This allows you to mark your center point clearly and prevents the drill bit from sliding across the polished surface when you start.

2. Create a Pilot Notch

If you don't have a guide jig, start the drill at a 45-degree angle. Once a small "crescent moon" groove is ground into the stone, slowly bring the drill to a vertical 90-degree position.

3. Water is Non-Negotiable

Continuous water flow is the "soul" of stone drilling. It flushes out stone dust and prevents the diamond grit from overheating and