DIAMOND TILE DRILL BIT 12MM

CorePlus Diamond Tile Drill Bit 12mm

Drill clean, accurate fixing holes through hard porcelain and ceramic tiles with the CorePlus 12mm Diamond Tile Drill Bit. Its vacuum-brazed diamond cutting edge is designed to cut through dense tile surfaces efficiently while helping to reduce chipping around the finished hole.

The bit starts directly on the tile without requiring a separate drilling guide. Begin at an angle to establish the cutting edge, then gradually bring the drill upright as the hole develops. A tri-flat shank provides a secure grip in a standard drill chuck and helps reduce slipping during use.

Only minimal water cooling is required, removing the need for a continuous water-feed system. The hollow cutting profile also helps eject the drilled core, allowing efficient repeated hole cutting.

Key Features

• Produces clean 12mm holes in hard tiles

• Suitable for porcelain and ceramic

• Vacuum-brazed diamond cutting edge

• Starts without a separate drill guide

• Tri-flat shank reduces movement in the drill chuck

• Requires only minimal water cooling

• Hollow design helps eject the waste core

• Suitable for compatible cordless and mains drills

• Ideal for plumbing and bathroom installations

• Suitable for professional and DIY tiling work

Typical Applications

• Fitting bathroom and kitchen accessories

• Installing pipe clips and cable fixings

• Mounting shower screens and enclosures

• Fixing towel rails, shelves and cabinets

• Drilling anchor holes through tiled surfaces

Product Specification

• Brand: CorePlus

• Product type: Diamond tile drill bit

• Diameter: 12mm

• Cutting material: Vacuum-brazed diamond

• Shank type: Tri-flat

• Suitable materials: Porcelain and ceramic tiles

• Manufacturer’s product code: CORDTDM12 / DTDM12

• Quantity supplied: One drill bit

Drilling Guidance

Mark the hole position and ensure there are no hidden pipes or cables behind the tile. Select rotary mode only—do not use the drill’s hammer action. Start with the bit held at an angle to form an initial groove, then slowly bring it upright while maintaining light, controlled pressure.

Use minimal water to cool the cutting edge and prevent overheating. Allow the bit to work without forcing it, and wear suitable eye protection throughout the operation.