My company rents rotohammers and carbide bits, but not core bits,
because breakage an/or abnormal wear are always the subject of an
argument. Don't expect to be able to rent a core bit. Some rental
yards may have them, but many may only sell you the bit.
If you want a clean hole through the brick face, buy a very small
diamond bit from Harbor Freight (I got three for under ten bucks).
You merely need to start the hole through the brick with diamond to
get a clean hole, and then you can rent a 1" or 1.5" carbide bit and
a rotohammer to go the rest of the way through.
If the hole has to be clean all the way through, buy a carbide core
bit (no water needed) and make sure the rental yard can adapt to what
you buy.
Bits can be purchased at the rental store, from a construction
supply, or look in the Yellow Pages under 'abrasives', strangely.
> Chris is right... I need to remove a smooth circle 1=" in diameter
> thru a
> brick wall.... I'm afraid of percussion or hammer drilling as I
> might break
> the brick and this is a very visible location... I'll check the
> rental
> yards around here for a dry diamond core bit...
> We core holes in concrete all the time at work. I'm thinking a
> 1.5" hole
> might be a bit large for a hammer drill, maybe not. You can get a
> coring
> bit, similar to a hole saw. You need copious amounts of water on
> the cut.
> They are rather expensive, so rental would be best option.
> If you mean you want to drill a 1.5" hole through a brick wall, I'd
> suggest
> renting a hammer drill with appropriate 'bit' (if that's what you
> call 'em).
> I'm sure he doesn't want to take test it, but cutting a core is a lot
> less work than cutting a 'solid hole'. A core drill is similar
> to a hole saw, in that it only cuts the periphery.
> You should be able to rent a hammer drill and core bit.
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