It's the dreaded Wall Jog.
The last wall juts outward about 3", presumably to cover up the vent stack for the plumbing. And I am tiling it.
So.....How exactly am I doing this?
The cove base, pencil liner, and chair rail obviously all have to have a mitered corner at the Wall Jog. But what about the subway tile? I seemed to have only two reasonable choices - 1) order bullnose subway tile with the bullnose on the 3" side, or 2) miter the subway tile.
I'm chosen option #2, because I think it will look better to be consistent up the wall, rather than the miter, 15 bullnose, 2 miter program which would result from option #1.
Up until this point, I have been mitering my corners by carefully holding up the tile at an approximately 45 degree angle on my Super Burly MK Diamond Tile Saw, and hoping that I emerge from the experience with enough digits to continue to be able to deliver appropriate hand gestures in all circumstances.
I'm not up for that for 18 miters in a row.
So I broke down and ordered the MK Diamond Miter attachment, which conveniently showed up at the same time as my Cathedral Baseboard vent, putting me back in Tiling Business for the weekend.
And a lovely weekend it was, too.