Core drill or SDS for a large hole in the wall?

[HappyHippyDad]

Evening all...

On the few occassions I have fitted a kitchen extractor fan the builder has already cut the hole! This time I'm cutting it!

I have a cordless makita SDS which although great I have ruled out as not powerful enough but I am unsure whether to get the correct tool for the job, i.e a core drill or a corded SDS which would be useful for many other things as well as cutting great big holes.

I'd be interested to know if you guys just use your SDS (with clutch) or if you use a core drill? I'm also considering the 'drill lots of holes around the circumference and chisel out' method but I expect that takes much longer and is messy, plus it's always good to get a new tool!

Expect It'll be a 150mm diameter for the fan.

Cheers chaps..

 

[Geordie Spark]

Core drill if you can afford it, got to be better as it's designed specifically for the job surely? If you get a cavity with any insulation in it, pull the insulation out once you've cut the 1st brick/block as it will jam up something rotten...and make sure you take it off hammer, it's cutting not blasting!

Aye, a sure fire way to wreck a diamond core bit is to use it on Hammer Action.

The Tungsten Carbide jobs are different - those ones you DO use Hammer Action.

 

[trev]

I've never core drilled with hammer on, I'm not as daft as I look. All you really have to do is take your time with them. Try to blast your way through and you're going to cowp ya creels, if you're lucky it'll be the drill that takes the damage. If you're unlucky.........

 

[Geordie Spark]

I've never core drilled with hammer on, I'm not as daft as I look. All you really have to do is take your time with them. Try to blast your way through and you're going to cowp ya creels, if you're lucky it'll be the drill that takes the damage. If you're unlucky.........

Absolutely right my learned Friend.