Diamond Dust Core Drill Bit - 35mm

This diamond dust core drill bit is designed for precise drilling in ceramic tiles, glass, marble,...

Best current price£14.19from B&Q

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B&Q - Pro 35mm Diamond Dust Core Drill Bit & Shank Tile Marble Glass Hole Saw Cutter
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£14.19
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DebenhamsLoops Unisex Clear Pro 35Mm Diamond Dust Core Drill Bit & Shank Tile Marble Glass Hole Saw Cutter In
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Product Information

Full details

The Loops 35mm Diamond Dust Core Drill Bit is designed for professional contractors and dedicated DIY enthusiasts who require precision when working with hard surfaces like ceramic, porcelain, glass, marble, and slate. This bit offers the key benefit of clean, chip-free hole cutting in brittle materials, though it requires constant water cooling during operation to maintain longevity and prevent overheating.

All features

Model Part Number5055538119293
BrandLoops

Extended Product Information

FAQs

Can I use this bit with a hammer drill?

No, you must disable the hammer or impact function. Using an impact setting will damage the diamond edge.

Do I really need water for cooling?

Yes, water is critical to clear away friction-generated heat and dust. Dry drilling will significantly shorten the lifespan of the bit.

Will this work on tempered glass?

No, this bit should not be used on tempered glass as it will cause the material to shatter completely.

What is the recommended drilling speed?

Use a moderate speed. High RPMs generate too much heat and should be avoided.

How long will this bit last?

Longevity depends on the hardness of the material and your cooling technique. Proper water management is the best way to maximize life.

Troubleshooting

The drill bit is sliding across the surface during startup.

Use a mask of masking tape or a wooden guide jig to create a starting point and prevent the bit from walking.

The bit is turning blue or smoking during use.

The bit is overheating; stop immediately, increase the water cooling flow, and reduce drilling pressure.

The hole edges are chipping.

Ensure the drill is perpendicular to the surface and avoid excessive lateral pressure; use a slower RPM.

Pros and Cons

Pros

  • Delivers clean, professional-grade holes in brittle materials
  • Works with standard power drills without needing specialty equipment
  • Highly durable diamond coating extends the life of the bit
  • Versatile enough to handle a wide range of stone and glass surfaces

Cons

  • Requires constant water cooling to prevent damage to the bit
  • Not suitable for use with impact or hammer drill settings
  • May require a pilot hole or guide jig to prevent walking on slick surfaces

Setup, Compatibility & Care

To set up, ensure your power drill is switched to the standard rotation mode; never use the hammer or impact setting as this will destroy the diamond bond. Secure the workpiece firmly with clamps to prevent vibration, which is a leading cause of tile breakage.

For care, clean the bit after every use to remove dust buildup from the diamond matrix. Store the bit in a dry place to prevent rust on the steel shank. Periodically inspect the cutting edge for any signs of bald spots where the diamond dust may have worn away, which indicates that the bit should be replaced for optimal performance.

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