Name: 4-1/2" Diamond Blade Turbo Concrete Masonry 660412
Brand: Mercer
SKU: 765301660017
Price: 13.0 USD
Availability: InStock

4-1/2" Diamond Blade Turbo Concrete Masonry 660412

$13.00

In stock: 1 available

Product Details

UPC: 765301660017

Brand: Mercer

Diamond‑coated drill bits are used when you need to drill very hard, brittle materials such as glass, tile, porcelain, stone, ceramic, marble, granite, quartz, fiberglass, and hardened composites. They cut by grinding, not by traditional cutting edges.

Below is a clear, step‑by‑step guide you can use for your hardware store staff or customers.

How to Use a Diamond‑Coated Drill Bit (Safe & Correct Method)

1 Choose the Right Diamond Bit

Select the correct size and type based on the material you’re drilling.

Use diamond hole saws for larger holes (½'' and above)
Use diamond core bits for tile, glass, porcelain
Ensure the bit is water‑cooled type (most diamond bits are)

2 Secure the Material

Stabilizing the workpiece prevents cracking or slipping.

Clamp or hold the tile/glass firmly
Place a rubber pad or scrap wood underneath
Mark the drilling spot with tape to prevent wandering

3 Use Water for Cooling

Critical

Diamond bits must stay cool to avoid burning out.

Drip water continuously on the drilling spot
Or use a water dam (small ring that holds water)
Never drill dry—this ruins the bit and cracks the material

4 Start at a Low Speed

Diamond bits grind slowly; high speed causes overheating.

Begin at low RPM (400–600)
Hold the drill at a slight angle to start the cut
Once the bit bites, straighten the drill

5 Apply Light Pressure

Let the diamond grit do the work.

Do NOT push hard—this cracks tile or glass
Maintain steady, gentle pressure
Lift the bit occasionally to let water cool the surface

6 Finish the Hole Cleanly

Slow finishing prevents chipping on the exit side.

Reduce speed as you break through
Support the backside to avoid blowout
Rinse the bit after use to remove debris

Where Diamond Drill Bits Are Used

Ceramic & porcelain tile installation
Glass drilling (mirrors, bottles, panels)
Stone countertop work (granite, marble, quartz)
Shower walls, backsplashes
Masonry detail work
Fiberglass and composite drilling

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