Tungsten Carbide Glass Drills & Porcelain Tile Drills Explained

Drilling into glass or porcelain can be intimidating. One wrong move, and you risk chips, cracks—or even a shattered surface. That’s why using the right drill bit matters more than ever when working with delicate materials.

Let’s break down the difference between two top-performing drill types in this space:

🔹 Tungsten Carbide Glass Drills

What are they?

Tungsten Carbide Glass Drills feature a spear-shaped tip and are specifically designed for smooth entry and precision cutting into glass and glazed materials. Tungsten carbide is an extremely hard material that maintains sharpness and resists heat during drilling.

Ideal for:

• Glass
• Ceramic tiles
• Mirrors
• Glazed porcelain

How to use them effectively:

• Use low speed. High speeds create heat, which can crack glass.
• Avoid hammer action. Always use rotary mode.
• Keep the surface cool. Use water as a lubricant and coolant throughout.
• Apply light, even pressure. Let the bit do the work.
• Secure your material. Prevent movement to avoid slipping or fractures.

🔸 Keramo Extreme Porcelain Tile Drills

What are they?

The Keramo Extreme Tile Drills are purpose-built to cut through ultra-hard porcelain tiles and other dense, brittle surfaces. These feature a diamond-ground carbide tip for efficient and chip-free performance, even on thick tiles.

Ideal for:

• Porcelain tiles
• Stoneware
• Glazed ceramics
• Hard tiles and vitrified surfaces

Best practices:

• No percussion—use rotary mode only.
• Start at a 45° angle to help position the drill and avoid slipping.
• Use water to reduce heat build-up and extend tool life.
• Slow and steady pressure. Rushing increases the risk of cracking.
• Drill from the glazed side. If needed, score first to reduce breakout.

🧰 In Summary:

🛠️ Need the right tool for the job?

Browse our full range here 👉 Glass & Tile Drills