While our last post on crown showed how to work with 90 degree angles, we knew that it was highly doubtful that our room was actually square. We were surprised that almost nobody online mentioned this especially because a quick check revealed that the walls were indeed very much not square. Fortunately, This Old House had instructions on how to cut inside corners in a real house.
The first thing we found (naturally by starting and then deciding to take it all down and start over) was that it was much easy to move from left to right around the room. Since we had a half wall, it was even easier.
The first step is to hang the left side of the cut with a regular straight cut. Then, take the right side corner and cut an inside right corner. If you remember, that means with the bevel set at XX, set the miter left to 31.62, place the bottom of the crown against the fence, and save the left side of the cut.
Then, darken the leading edge of the crown with a pencil so it looks like this.
This is really just going to be a guide for your coping saw, so cut along the edge and then use a file or sandpaper to smooth the cut; it should look something like this.
Then, you can hang this piece of crown right next to the other and it will create a great tight corner!
Of course, things aren’t always as easy as they seem. One of the problems we were consistently having was keeping the crown at the right angle. The flat portion of the crown was just too short to be useful. So we measured the angle of the crown back and cut some small wedges to extend the flat part of the crown.
Each type of crown is different, but we found that a 36.5 degree cut worked great for ours. A little wood glue held it on and made hanging the crown much easier. Also, we used a right 31.62˚ angle and saved the left and right to create a “scarf” joint to help hide the seams between the pieces of crown. Here’s a picture of everything before the caulking and painting.