If you're cutting tiles with a diamond saw, you need to make sure that the
blade is running true and that you aren't cutting too fast. Also make sure
that there is plenty of water as this does both cushioning chores as well as
lubrication and cooling.
If you push the tile in too fast on any saw, the forces will get high enough
to where cracks happen.

--
Bob May
Losing weight is easy! If you ever want to lose weight, eat and drink less.
Works evevery time it is tried!