Core drill advice

[mangroa]

Hi,

I need to cut some 100mm holes in sandstone paving for some lights.

I've got an SDS drill and a 100mm core drill. Any tips for using this?
Should the drill be on hammer action or just drilling?

Had a quick gothis morning and hardly scratched the surface! The pilot bit went through fine.

One of these...
http://www.toolstation.com/index.html?code=45500

Thanks
Alan

 

[cross thread]

no hammer. wrecks the bit, steady pressure and it will cut slowly

 

[eggplant]

I disagree, hammer on that one, no hammer on diamond ones. If you dont use hammer with that you will be there all day

 

[corgiman]

at that price hammer the shyte out of it

it will need sharpening at the end of the job but who cares