However cutting boards only work for man made tiles.
How to tile a bathroom wall corner.
Subtract 1 4 inch from the measurement you.
First spread thinset along the corner and secure the trim by pushing it gently in the adhesive.
How to tile inside corner walls.
Use a 3 16 v notched trowel to apply the mastic adhesive to the wall.
Set the wet saw table to 45 degrees to make miter cuts.
Hang all the full tiles over both walls leading to the corner starting each wall at the middle of the bottom and building up and out.
Start in the corner and make a miter cut at a 45 degree angle otherwise it will be too short.
Use a spirit level to check if the corner trim is plumb and attach it again if needed.
Make a series of reference marks for the top and bottom tiles image 1 that way you will know how many tiles to put on the wall.
There are two ways to cut bathroom tiles into a corner.
With a tile wet saw or a cutting board.