Thread: Core Drill. Anyone Used One

Arh, they are all kids toys that you are using! Here is a "proper coring bit":


pdc core bits are made with polycrystalline diamond compact cutters on matrix

PDC_core_bits.jpg

I'll see your little bits, OF and raise you a mole.

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Originally Posted by V8Ian

I'll see your little bits, OF and raise you a mole.

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Ah, but with mine you can sit in the air con on the surface, and just pull it up when you have gone far enough!

I'll see your little bits, OF and raise you a mole

Looks large enough to get a 16mm pipe through 58i. Not to mention a Railway Coach.

Originally Posted by V8Ian

I'll see your little bits, OF and raise you a mole.

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That looks like the one they used to build the Cem7 tunnel.

Originally Posted by W&KO

So are these

Concrete Drilling Equipment | Smart Diamond Tools

On a serious note, please do NOT use one of those back handled drills for anything other than soft wood. Half a turn when, not IF, they jam and you will have a broken wrist.

I core drill regularly into concrete up to 150mm dia.
For glass glass pool fencing spigots and aluminium posts etc.
Cut with water. Drill plumb but wiggle the drill a bit every now and then so the bit or divot will come out of drill easily.
Reo no problem, feels like a rumble but keep speed up and lots of water.
Tip: once the divot is loose in hole, use bbq tongs to get it out!

MJS

Forgot to say: as per centering the drill, we use a timber template with a hole the same size as core drill bit just to get it started.
I think crowds like BE Hire, hire both bits and drills.

MJS