Irwin Diamond Drill Bit - 7mm

This diamond drill bit is suitable for all grades of hard and soft tiles.

Yes, drilling with water is highly recommended. It cools the diamond cutting head, significantly increasing cutting speed and prolonging the tool's life.

The raised diamond grit edge is designed for easy starting on hard tile without the need for a guide. You can also start at a slight angle to create a groove.

This slot allows for continuous, uninterrupted cutting by automatically ejecting the removed material (slug) from the hole.

The lifespan depends on usage, but the tough brazed diamond grit and reverse spiral cooling design are engineered for long life, especially when used with water.

While designed for tile, diamond bits can often cut glass. However, specific glass drill bits are generally recommended for the best results and safety on glass materials.

Ensure water is being used to cool the bit. Check for excessive wear on the diamond grit. Reduce drilling speed and apply steady pressure.

Ensure the bit is sharp and properly cooled with water. Start the drill at an angle to create a groove before drilling perpendicularly. Reduce drill speed.

Clear the auto slug ejection slot with a small tool. Ensure you are not applying excessive side pressure that could jam the slot.

Immediately stop drilling and allow the bit to cool. Increase the amount of water applied to the drilling area. Consider reducing drill speed.