A tool used for creating holes in surfaces, such as for mounting objects on walls.

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How big a hole do I have to drill in concrete to embed rebar in it?

I have a concrete patio that I'd like to use as the foundation for a CMU wall. I'd like the CMUs to be tied into the patio slab with rebar. I get that the gist is to drill a hole in the slab, put ...
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How could a power drill trigger switch be damaged when used continuously in variable speed range?

I just acquired a DeWalt DCD790 cordless brushless drill/driver, and going through the manual, on page 10 under Speed Trigger Switch, I find the following: NOTE: Continuous use in variable speed ...
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What is the correct method to determine the drill bit size from the measured threaded diameter?

I'm trying to decide the correct drill bit size for a hole I have to make to fit my thread. I measure the (major) diameter of the threaded section as 0.5325 inches. The threads are not supposed to ...
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Drill tool unable to work when face up

I got a drill tool when I press the handle and face the drill bit up, it does not functioning at all but if I face it down, it works. What is the possible problem?
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Drilling a hole

I have a set of drill bits but no drill. I need to make a hole in a thin surface prone to splitting and don't have a hand drill or a power drill on hand ; what could I use to make that hole?