G
Gazzer
A 600mm cut on a wet cutter will take you around 2 to 3 minutes a pass, then there's the setting up etc for each different sized cut.
10% is a standard waste allowance. I've come in at anything from 0% to about 15%, depending on the geomitry of the job and the quality of the tiles.
If he is causing you grief about this, work out what waste you would get with the job anyway because of normal layout and present him with this.
You sure :dizzy2: