Drilling dia. range in concrete/masonry

(hammer drill bits)

4-24 mm dia.

Drilling dia. range in wood (wood drill bits) 5-20 mm dia.

Drilling dia. range in wood (hole saws) 25-68mm dia.

Drilling dia. range in metal (solid metal) 5-13 mm dia.

Drilling dia. range in metal (sheet metal,

max. 2mm thick)

5-22 mm dia.

Drilling dia. range with thin-walled diamond

core bits (reduced hammering action)

25-200 mm dia.

Drilling performance in medium-hard

concrete

8 mm dia. =28 cm3

/min.

12 mm dia. =45 cm3

/min.

16 mm dia. =49 cm3

/min.

Hi

I have done measurements up to 20mm ring diameter. About the material, if you can find an appropriate cutting method, you can run measurement on any material. For example, we use EDM for metals.

Thanks, guys - perhaps I should have phrased my question differently:

What is in your experience the smallest diameter of the core that you have been able to work with?

I am interested to know if it is possible to go sub-mm.

Alexander