Live rock/Coral Glue?

[DiverDude]

Originally Posted by reefwars

wouldnt matter really as the rock we use isnt that hard the trick is to start with a smaller bit then increase the size.if one wanted you could use a masonry bit or diamond bit but youd get away even with a wood bit.

I'd think that a wood bit would grab too much -but then I haven't tried yet ! One thing is for sure, with the exception of the masonry bit, anything you use is going to be junk afterwards (or need a serious resharpening !)