drilling limestone - how long does it take?

madtripper(5/6 Guelph)January 1, 2009

Using a hammer drill and diamond drill bit - how long does it take to drill through a 12" limestone?

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pls8xx

Limestone is usually a soft stone. I'm not sure what you mean by a diamond bit, but my standard hammer drill bits would go through 12" of limestone with a 1" hole in 2 to 4 min. Note that the entry hole will be clean but the exit will crater out. Minimize the crater by setting the stone firmly on damp sand and go easy as the hole nears completion.

    Bookmark   January 3, 2009 at 10:37AM
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