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.
Crown moulding on angled wall.
The saw can be set to 45 degrees to the left or 45 degrees to the right.
Determine the install angle of your actual molding.
38 45 or 52 degrees.
Set miter angle to half wall angle.
Rest bottom of molding against the fence and top of molding against table.
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The saw can be adjusted to cut at any angle set it to 45 degrees for one side of a standard 90 degree corner.
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.
My molding was the 52 degree variety.
45 miter for 90 walls.
It s easy to get confused and cut the angle backward.
How tilted it is when it attaches to the wall crown typically comes in three spring angles.
Putting crown molding on sloped attic walls written by laura apel on aug 12 2009.
On an outside corner the bottom will be shorter.
Using a power miter saw is the best way to cut crown moulding angles.