Carpentry and Woodworking - cutting miter angles on crown molding
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09-24-00, 09:25 AM
we are coming off a straight ceiling that goes into an angled ceiling. Using a cap molding about 1 1/2" wide and 3/4" thick at the top( using the wider part at the top). I have a 12" compound miter saw. we are serious DIY'ERs but can't figure this cut out. HELP!
09-26-00, 12:35 AM
Your message heading indicates crown moulding. I guess you're adding a cap moulding to that. I also suspect that you will encounter a straight wall from the angled ceiling.
Mitering in the conventional sense will be almost impossible unless your knowledge of Trigonometry is superb. Crown moulding mitering tables won't be much help either.
Coped joinery is the general answer. Two sources to more information are 1> search http://www.woodchuckcanuck.com for crown moulding, and the post 2> FAQ /newbie resource within this forum (which is an introductory source only).
Mitering in the conventional sense will be almost impossible unless your knowledge of Trigonometry is superb. Crown moulding mitering tables won't be much help either.
Coped joinery is the general answer. Two sources to more information are 1> search http://www.woodchuckcanuck.com for crown moulding, and the post 2> FAQ /newbie resource within this forum (which is an introductory source only).
Handyone
09-27-00, 10:10 AM
Sounds to me like you are trying to put up crown moulding. If the walls are on the same plane, then I'll tell you how to cut it.
By same plane I mean that they share a wall. For instance if you had a 20' long wall, 10' of it 8' high and them it starts to go up at an angle for the remainding 10'.
Crown moulding is cut upside down on the miter saw. Place the moulding upside down on the table with the top and bottom edges against the table and fence, basically just how it will go on the wall. This is usually 38 and 52 degree angles, but it doesn't matter cause like I said you are just placing it squarely against the fence and table. Like this: |\_. Now for an outside corner you would move the blade to 45 and cut. This gives you your compound angle without beveling. If your ceiling goes up 45 degrees, you would cut the miters at 22.5.
Just play around with it. Once you start cutting it upside down, you will see how it works. Most people will try every way to cut it except upside down and it just doesn't work. The first time I tried to cut it, I had a sizable little wood pile going before I figured it out. Good Luck.
By same plane I mean that they share a wall. For instance if you had a 20' long wall, 10' of it 8' high and them it starts to go up at an angle for the remainding 10'.
Crown moulding is cut upside down on the miter saw. Place the moulding upside down on the table with the top and bottom edges against the table and fence, basically just how it will go on the wall. This is usually 38 and 52 degree angles, but it doesn't matter cause like I said you are just placing it squarely against the fence and table. Like this: |\_. Now for an outside corner you would move the blade to 45 and cut. This gives you your compound angle without beveling. If your ceiling goes up 45 degrees, you would cut the miters at 22.5.
Just play around with it. Once you start cutting it upside down, you will see how it works. Most people will try every way to cut it except upside down and it just doesn't work. The first time I tried to cut it, I had a sizable little wood pile going before I figured it out. Good Luck.
10-14-00, 08:55 AM
Always cut miters the way the piece would be installed. If the piece is an angled piece, Than lay the piece at that angle on the saw to cut your miter.