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Diamond Core Bit Through Steel?

Diamond Core Bit Through Steel?

Diamond Core Bit Through Steel?

(OP)
Project requires some post-installed anchors be used in foundation containing top steel in the footing.

Will a diamond core bit cut rebars that may be encountered?

(***note, no steel was required in the foundation by design***)  

RE: Diamond Core Bit Through Steel?

I believe that a diamond core drill bit will cut steel bars like butter.
When I'm worried about steel, I always call for hammer drilled holes (which work better with most epoxy post installed anchors anyway)

RE: Diamond Core Bit Through Steel?

(OP)
yea, but hammer drill wont cut bars that encountered, right?

RE: Diamond Core Bit Through Steel?

Hilti actually manufacturs a hammer drill bit call the "Rebar Eater".  I was unfortunatley introduced to this little monster on a critical application.

RE: Diamond Core Bit Through Steel?

It will - but it sure does not like it!!!

RE: Diamond Core Bit Through Steel?

(OP)
wow....never used one.
Back when I had the satisfaction of working with my hands, I had occasion to hit a few re bars with a rotary hammer. The result was usually a wrist breaking jerk of the drill just before it went out on torque overload.
I'll look into the rebar eater.

RE: Diamond Core Bit Through Steel?

Sorry - I thought you were trying *not* to cut up the rebar.
If you don't care about the bars, a diamond core drill will work (double check it's compatible w/your anchor).
I've never heard of the rebar eater - I`ll definitely check that out.

RE: Diamond Core Bit Through Steel?

Beware, diamond cored holes are not good for chemical anchors due to their smooth sides.

Not good for mechanical anchors either for that matter.

RE: Diamond Core Bit Through Steel?

(OP)
If Hilti approves of the core drill, then I have to assume it is fine.  

RE: Diamond Core Bit Through Steel?

TJ...water cooled diamond bit will eat through rebar, no problem.

RE: Diamond Core Bit Through Steel?

For Hilti chemical anchors,
I believe that RE_500SD is approved for use in core drilled holes,
RE-500 (non-SD) might be ok,
and HY-150 is definitely not ok in core drilled holes

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