I've encountered an issue at home with the molding of the ceiling after renovation. The thing is, I have a dormer that creates odd angles.
The molding I am using is a 135-degree cove molding, 15x56.
Partly, it's 135 degrees from the flat wall to the ceiling. Then, there's the 90-degree corner. But how should these angles be able to meet? (Inner corner on the left in the picture)
Now I'm getting uncertain, but it should just be a matter of double-mitering with the miter saw. So, angle the saw down 45 degrees to cover the 90-degree corner and simultaneously turn the saw 67.5 degrees to fix the angle change to 135 degrees. Then you should get the right angle in a single cut. It will probably take a lot of test pieces before you get the right idea and cut the molding in the right direction. Start first with a completely square piece of wood to see if the angle is even correct before you tackle the coving which must be turned in the right direction in the saw for it to fit.
Now I'm unsure, but it should just be a matter of double-mitering with the miter saw.
Tilt the saw 45 degrees to cover the 90-degree corner and simultaneously rotate the saw 67.5 degrees to fix the angle change of 135 degrees. Then you should get the right angle in a single cut. It will probably require quite a few practice pieces before you get it completely right and cut the mold the correct way. Start first with a completely square piece of wood to see if the angle is correct at all before you tackle the crown molding, which must be turned the right way in the saw for it to be correct.
Thanks for the reply!
I can only tilt the saw blade to the left and not to the right. Do you mean to cut the right piece as a regular 45 and then the left one as 45 degrees and simultaneously 67.5 sideways?
A concave molding is designed to fit into a 90-degree (or nearly 90-degree) corner, so it is hard to fit between the ceiling and the wall where you have a 135-degree angle.
I think you will have a hard time achieving that without getting large gaps between molding/wall and molding/ceiling.
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