I have never drilled through rocks before and I am wondering how different
it will be compared to drilling through solid concrete. I suspect it may be
I have an exterior wall that is a 12" thick concrete block wall (8" block
with a layer of 4" block), and on the outside of this is a layer of
rock/stone face like this:
I want to add a hose bib on that wall. I have access from the inside and a
copper pipe is near by that I can split off and run a 1/2" copper pipe
there. I have a rotary hammer with concrete bits and I can chew through the
12" concrete block like butter, but I am not so sure about this rock...I
don't want to end up pushing a piece of rock completely out, and if I can
drill into it I don't know how clean the hole will be, will I end up
cracking it into two?
I don't have a spare piece of rock or I would try to drill it just to see.
Thanks in advance,
I would be interested in this answer, also. I want to make a rock feature
on a rebar skeleton, and I was wondering about drilling half way through the
rocks to mount them on the skeleton's fingers. Wondering if the Makita
roto-hammer I have would drill a hole or crack the rock. I have tons of
rock I would like to get rid of if you would like some. They grow here.
Every time you think you got them cleared, more pop out of the soil.
It really depends on what kind of rock you are talking about. In Miami
it will be coral rock or limestone and a hammer drill will go right
through it. They break up coral rock with a back hoe.
I am not sure about what kind of rock Steve has in Utah. I collect
rocks from our travels out west and I have picked up everything from
soft sandstone you can drill with a pocket knife to some granite like
material that would be tough to drill with a rotary hammer.
You name it, we got it. A lot of spongy lava rock here. Lots of sandstone
type stuff. I just need to go out and drill some. Weather has just been
dreary, and rain forecast for the next few days.
I need a bigger shop.
Be prepared for the rock coming off the wall. That's what happened the
only time I have done this. My friend and I were drilling a hole
through the wall into his basement with a hammer drill. It wasnt such
a big deal, we epoxied it back in place.
I'm not a geologist but it looks like they might be shattered quartz-
in which case you can only drill them with a diamond bit.
You might try a post to a geology group with a good color close-up of
3-4 rocks. They might be able to ID and tell you where they fall on
Moh's scale. [or you can determine where it falls by scratching
with some known substances-
Most rocks [in my part of the world] are drillable with a regular
masonry bit- no hammering needed.
I'd try drilling first- if that doesn't work, go for the
remove/shatter/re-install that someone mentioned.
No problem- See above-
No problem- see above.
The 'spare piece' is sitting where the pipe comes out. Even if it
ends up getting removed and a new mortar spot has to appear where it
And, maybe try to find a place to start the drilling from the outside that
is in the crevice/corner between 3 or so full rocks that are on the outside
surface -- so that most of the rock drilling will be in the second layer
below the surface rocks. This is just a guess on my part based on looking
at the picture.
Totally agree. Milwaukee has diamond bits, hole saws, stuff like that.
If you want to go easy on your budget, Harbor Freight has all manner
of diamond products, blades, hole saws, drills. When you get through
the veneer, then break out the brutal tools.
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