Thread: Hard Coral
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Old 08-31-2017, 01:15 PM
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Like Tyfigher said, concrete/masonry bits will work but they need to be used in a hammer drill on the 'hammer drill setting'. The size/brand/quality/condition of the bit and drill makes a difference too. They are however pretty rough/violent and wouldn't be my first choice.

There are bits for drilling through tile as well as diamond coring bits which have already been mentioned.
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