"John Stumbles" wrote in message
...
"David Moodie" wrote in message
...
having recently tiled the bathroom I'm now looking to drill a few hole
in
the tiles.

the problem being that the tiles are approx. 9mm think and are
limestone/porcelain.

last time I had to drill porcelain tiles I think I just used my SDS.
What are limestone/porcelain though?



the tiles have a limestone appearance but I believe they are essentially
porcelain

My SDS hradly even scratches the surface when using a new carbide tipped bit