I am tiling a bedroom floor with 20" tile on the diagonal. Is there a way to layout the tile so as to minimize cutting? I am fine with trying the layout in reality and making adjustments to it as needed. I can also work with graph paper.
with tiles aligned diagonally every edge tile will need to be cut. Arrange the layout for best look.
A 45 degree diagonal layout reduces wastage because the offcut can be used in the next place along (unless you are doing two-colour tiling, or have tiles with a directional pattern) it also hides crooked walls
Draw up the room outline to scale on transparent sheet and place it over a scale representation of the tile grid. Once it looks good staple it in place.
Try to avoid any layout that requires cutting the tips off tile corners, cutting one third to one half off is easier and looks better.