It s a best practice to cut crown moulding upside down on the miter saw.
Crown moulding on angled wall.
If using a compound miter saw set bevel angle to 0 no bevel on an inside corner the top of the molding will be shorter.
Set miter angle to half wall angle.
38 45 or 52 degrees.
On an outside corner the bottom will be shorter.
Rest bottom of molding against the fence and top of molding against table.
My molding was the 52 degree variety.
The best way to do it is to make a small transition piece of crown molding that acts like the crown is being installed on a flat ceiling on one side of the piece but on the other edge it is making a transition as if the crown molding is climbing a stairway making the bend that happens as you transition from the sloped ceiling along the stairs to the flat ceiling below or at a flat landing.
The saw can be set to 45 degrees to the left or 45 degrees to the right.
45 miter for 90 walls.
Using a power miter saw is the best way to cut crown moulding angles.
Every time you cut a miter whether for coping or outside corners you ll set the crown molding upside down against the saw s fence.
How tilted it is when it attaches to the wall crown typically comes in three spring angles.
It s easy to get confused and cut the angle backward.
To avoid mishaps hold the crown molding up to the corner and draw a slash showing the direction of the cut photo 11.
The saw can be adjusted to cut at any angle set it to 45 degrees for one side of a standard 90 degree corner.