Drilling big holes in travertine

[Lower]

Any suggestions on how best to do it?

I've got to put holes circa 30mm in the tile to pass tap bodies through. Drill a series of holes and link with a tile saw?

 

[joe-90]

If you have a drill press get a cheap diamond drill from B&Q for less than a tenner.

 

[nicktiler]

you can buy a 30mm diamond hole saw from most good tile shops

 

[Lower]

The hole ended up needing to be 38mm.

For what its worth, a normal high speed steel hole saw with plenty of water cuts travertine perfectly!