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Trying to drill through concrete with anything other than a hammer drill is more trouble than it's worth...rent one or borrow one. And you shoudn't need more than one bit unless you are using too much pressure, but if you borrow one from somebody, be kind and buy them a new bit when you're done.
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Money can be lost or stolen, health and strength may fail, but what you have committed to your mind is yours forever.
http://miscmusings.townhall.com/
Who is John Galt?
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