This is from a thread I did a while ago. Jarkaflex for marking then wet saw for cutting curve.
Full tiles are down:
I place spacer to measure up to and also leave a couple of mm movement gap against obstacle.
Measure both sides:
Transfer these 2 measurements to the tile to be cut.
I then use my Jakarflex (solder wire is just as good) to replicate the curve:
Then transfer to the 2 marks on the tile made from the previous measurements:
Cut tile and it will fit every time:
Full tiles are down:
I place spacer to measure up to and also leave a couple of mm movement gap against obstacle.

Measure both sides:

Transfer these 2 measurements to the tile to be cut.
I then use my Jakarflex (solder wire is just as good) to replicate the curve:

Then transfer to the 2 marks on the tile made from the previous measurements:


Cut tile and it will fit every time:
