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Re: Drilling holes in concrete?
wow, that is kinda big. our contractors do this all the time. if there is repeated bolting and unbolting, they epoxy in threaded fittings. you will need one of those big, cool bosch hammer drills.
if you are going to leave it, they use this bolt that looks like a big sheet metal screw. just predrill and rattle it in. doesnt do that great once you take them out.
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poof! gone
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