Serial Bodger wrote:
I have a water cooled electric tile cutter. Used it to do my
kitchen/bathroom tiling.

Fantastic.

The main advantages over a manual tile cutter are :-

1 .You don't break lots of tiles that a hamfisted clod like myself
does with a manual one.
2. Cut corners and semi complex shapes again without breaking tiles.
3. If can take 2mm off one edge of tile to get it to fit. Try doing
that with a manual tile cutter.
4. Big tiles ... no problem.

Best 40 Quid I spent. I would have probably broken a lot more than 40
Quids worth of tiles using a maunual tile cutter.

I'd second all of that. I find also that there is much less wastage at the
end because you can cut down the larger offcutts to fit the smaller places.
I used a PlasPlugs one to cut floor tiles diagonally as the OP wishes to do.
Would have been nigh on impossible for me to do it the manual way.