If you are encountering a lot of chipping as you say on your wet saw i believe the problem is in cutting the tiles too fast.
Tile saw chipping glaze.
Push the piece between the blade and fence until it completely clears the blade.
Fill the reservoir under the platform of a diamond blade wet saw with water.
Set your blade so that this time it will cut through the whole remaining thickness of the tile.
Chipping tile when cutting with a saw happens because the blade gets worn.
If the hardness between the body of the tile and the glaze is greater than 2 calibrations per the mohs hardness scale then it is supposedly more susceptible to chipping.
Before removing the tile turn off the saw and let it power down.
Because of the hardness of porcelain always prevent chips but working slowly and using a new blade helps.
Make sure the tile doesn t touch the blade before doing this.
Holding the tile glazed side up with both hands feed it along the fence and into the blade.
How to cut glaze tile without chipping.
Now you are going to make the notch.
Use a piece of scrap tile to support the exit edge as the cut is completed 2.
You have to be very patient in cutting tiles whether it is a wet saw or a manual tile cutter.
As an after thought take one of your tiles to the store and get the sales associate to cut it for you using their saw if the chipping problem is dimished always expect some then ask to see what blade is mounted on that saw.
Notching one end set the saw blade or platform at a depth that will cut through the full thickness of the tile.
Push the tile into the blade along the shallow.
If your tile is not porcelain then i m thinking a 215 or 315 blade will produce less surface chipping than the 225 hot dog.
To notch the tile follow these steps.
Turn the saw on.
Push slowly letting the saw do the work and keeping your fingers away from the blade.
Flipped the tile upside down so the blade is cutting inwards against the glaze rather than outwards.
Although it seems more likely the tile has been abused in some way to cause chips there are tests that can be performed on the tile to determine how chip resistant it is.
It just needs a quick sharpening that you can do yourself.
I will show you what yo.