I'm trying to drill a series of holes on a 50ish year old concrete pad (it is the the landing to the concrete steps that go down to my basement on the outside of the house).
I was originally expecting the concrete to be only 3-4" thick, based on my experience cutting into the concrete in the basement floor -- but it appears that this landing pad is at least 6" thick (ugh).
Anyway, I'm using a high quality (I think) Bosch SDS bit and using a Hammer Drill and this setup is working (though slow going...) but it seems like this bit is already getting dull after doing 8 holes... is this to be expected? (and yes, I do have the Hammer Drill in Hammer mode...).
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