On the contrary if you have to install cut tiles you should spread the thinset to the back of the tiles and install it with the cut edge pointing towards the inside corner.
How to cut wall tile around 45 degree corner.
Place a block of wood that has been cut to a 45 degree angle on the plate of a tile wet saw.
Cutting any type and size of tile with a home made machine.
Use bevel cuts for inside or outside wrap around corners as an alternative to the rounded edges of bull nose tile or where two walls meet.
Line up the straight edge of the board with the side of the blade so the angle slants downward to the.
Bevel cuts are typically 45 degree cuts along the edge of tile.
Cut off the end of a piece of bullnose trim tile at a 45 degree angle using the gauge on the saw tray.
Repeat the process for another piece of bullnose but cut the tile in the opposite direction so that when you match the two 45 degree angle cuts together you have a 90 degree corner that wraps around the top edge of the countertop.
Perfect outer tile corners made by solid technology from artiler.