I'm new to this lark of making big holes (apart from a bit of chiselling
a while back). I recently made a 50mm hole in whatever passes for breeze
block in a 1930s ex-council house using a TCT core drill and a 760W
drill. It happened to be an SDS machine, but I had the hammer turned
off. It went through like the proverbial hot knife through butter. From
reading the above, it seems as if others would do this job with the
hammer turned on...

Next job will probably involve hard brick. To Hammer or Not To Hammer?


I never use the hammer action when using a core drill. Good luck with the
hard brick.

--
Adam