Seeing as I haven’t come across a book (or magazine article) yet that addresses this… What methods are there for cutting crown mold for an interior corner that is 155 degrees? I’m assuming because of the angle, the only way to do the installation is to make a compound miter instead of cutting and coping. Am I missing something, or is this the only way to do this?
For those wondering how I get a 155 degree angle, I’m installing the crown on walls above a bay window/wall, and this is the angle between the side and front windows.
Thanks!
Replies
You can cope this angle, too. And like usual, the cope will most likely give you better results.
If you can figure out the angle by which to cut the miter -- then you already have the angle for your cope. Just chop the piece to that same angle, and then follow the line with your coping saw just like you would any other time.
Ragnar
You need to have a secondary fence that's 30º+ from the regular fence (like the 30-60-90 blocks we use on production metal-working machinery). With a 30º fence (block), you would cut a 47.5º mitre to get to the 77.5º. I do know guys who use a 90 (they would have to cut a 12.5 mitre), but I like the 30 or a 45
WATCH YOUR FINGERS !!!!
Phill Giles
The Unionville Woodwright
Unionville, Ontario
Thanks for the replies!
Phill, I think that one of my thoughts was along your lines... if I'm understanding you, you'd clamp an auxiliary fence so that the correct miter angle can be achieved, and it would also allow the crown to be "nested", eliminating the need for the bevel cut, correct?
Ragnar, I guess I'm having a tough time seeing how you can cope an angle this large, unless I'm not thinking along the same lines you are. I'm thinking about how a standard 90deg interior corner is handled... one side has a piece of crown butted into the corner, with the other side having a piece of crown coped to match the profile. Now if the interior angle becomes greater than 90, the the angle of backcut for the cope increases. If the angle gets too far past 90 though, the backcut would be very difficult to do due to the extreme angle that would be needed. Am I not thinking right?
For clarification...is the angle that's formed by the intersection of these two walls acute or obtuse?
I gather from your description of it as an inside corner of a window bay that it's an obtuse inside corner. In that case, I'd simply miter it. 155 degrees using upsidedownandbackwards would warrant a miter setting of 12.5 degrees for each cut. Easy.
Phil's post is what confuses me. Actually, it's not his post, but your reaction to it. My impression from his post is that he interprets that it's an acute angle, which I would describe as a 25 degree angle instead of a 155 degree angle. His recommendation for swinging the stock off the saw's fence is excellent advice for cutting angles beyond the swing or a CMS.
Regardless...it's time for bed. Maybe I'll read this differently in the morning.<g>
That's correct - it's the only way to cut the angle (although other methods do sounds very palusible, until you've tried them, for example, cutting the complimentary agle of 12.5º - sounds great, except that would have to be 12.5º from the fence). .
Phill Giles
The Unionville Woodwright
Unionville, Ontario
Burpnboy,
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