Wet or dry core bits?

Wet for reinforced and thick concrete: water suppresses dust and extends segment life. Dry bits with extraction are enough in brick, aerated block and hollow units.

Why has my core bit stopped cutting?

Usually the segments have polished over, or you have hit reinforcement. Polished segments are resharpened on an abrasive block.

Can core drilling be done hand-held?

At small diameters, yes, but an anchored rig gives a straighter hole and is safer. At large diameters a rig is mandatory.

What if the thread does not match?

Use a conversion adapter — they exist between the common thread sizes. Check that the added length still suits the machine.

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Core Bits

A core bit cuts a large, clean-edged hole in concrete and masonry with a cylindrical crown: it cuts only the circumference and ejects the core whole. The catalogue holds 42 bits.

1–24 of 42 · page 1 / 2

Wet and dry cutting

Wet core bits run with water cooling: it suppresses dust, extends segment life considerably and is standard in reinforced concrete. Dry bits run with dust extraction and suit brick, aerated block and hollow units.

The thread follows the machine (1/2" gas and similar) and can be converted with an adapter. Diameter follows the penetration being made.

Wet in reinforced concrete, dry in light materials.
A rig anchored to the wall gives a straighter hole than hand-held work.
Polished segments are resharpened on an abrasive block.
If the water stops, the segments burn — cooling must be continuous.

Frequently Asked Questions

Wet or dry core bits?
Wet for reinforced and thick concrete: water suppresses dust and extends segment life. Dry bits with extraction are enough in brick, aerated block and hollow units.
Why has my core bit stopped cutting?
Usually the segments have polished over, or you have hit reinforcement. Polished segments are resharpened on an abrasive block.
Can core drilling be done hand-held?
At small diameters, yes, but an anchored rig gives a straighter hole and is safer. At large diameters a rig is mandatory.
What if the thread does not match?
Use a conversion adapter — they exist between the common thread sizes. Check that the added length still suits the machine.