7mm Wet Diamond Hard Tile Drill Bit from Cookson Hardware.
Product reference: DD7
A wet diamond drill bit used to drill an accurate hole into hard materials such as ceramics, porcelain, marble and slate. Water must be applied to extend lifespan.
Using the wet diamond drill bit;
- Create a groove by working the the drill bit carefully at an angle of approx 30 degrees to the material
- Use the groove and slowly bring the drill up to 90 degrees to create a ring
- Apply water and keep checking to make sure the hole does not run dry
- Eject the cut material "slug" and move on to the next hole
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