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linnea56chgo5b

Coping an inside corner: what am I doing wrong?

linnea56 (zone 5b Chicago)
3 years ago
last modified: 3 years ago

I wanted to do this rather than miter the inside corners. It's a cold spot and I am expecting movement of the joints.


I read verbal instructions plus watched a few videos. It seemed straightforward. Cut a 45 degree angle to reveal the profile, then cut out the exposed interior wood along that line.


But it's not working. Are there some forms of moldings where it doesn't work? It's cove molding, which is concave. The videos I watched showed shoe, baseboard, and chair rail, all of which are convex.


Or did I just misunderstand the directions somehow?


First I cut the molding at 45 degrees. Then used a fine saw to cut along that profile.


First photo is how far back I was having to file the back of the molding to get it to lay flush. It never did lay flush. As I understood it, this should not be necessary. "Slight undercut" is what I read.


Second and third show how it does not lay properly against the uncut molding. Not even close to correct. 4th and 5th are just when I gave up and tried winging filing the contour to fit. That didn't work either.


Someone please tell me where I'm going wrong! Thanks.

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