drilling

Quoted text begins.To whit: If I use a hammer drill on marble, is the bit stunning only
the stone directly in its path, or all the stone around it as well?
End of quote.

Bill,

There may some slight spalling adjacent the top of drill hole. There is
some soft white marble that's not going to take to drilling very well
in some instances. I have installed a lot of marble veneer using the
'standard set' method of drilling pilot holes on the narrow sides of a sheet
so to install the copper fastening wires. Usually never a problem with
this, of course I'm using 3/16" drill bit with hammer drill.
Marc