lap joint in crown molding

jaansuOctober 26, 2011

I'm about to tackle my first crown molding project and I need to make a lap joint. It sounds like the best way to make this is via a tilting miter saw. Any good means to do it if all I have is a non-tilting miter saw? What I seem to see is that I need to hold the trim at the spring angle against the fence but I don't feel confident the two cuts will match up. Any ideas?

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That could be a little tricky without a compound miter saw. I'm assuming the crown is too tall to cut in the vertical position?

The only thing I can think of is to make some kind of auxiliary table to support the moulding at the appropriate angle.

    Bookmark   October 27, 2011 at 6:12AM
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Make pencil marks on the fence and table so you can position both pieces the same.
Even better, you can add an insert table with a wooden stop strip that holds the molding at the same spring angle every time.
You can correct the second piece with a block plane as needed.

    Bookmark   October 27, 2011 at 4:47PM
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I have a compound miter saw but rarely use it in compound mode to cut compound miters. I much prefer to hold the molding upside down at the appropriate spring angle (pretend the fence is the wall and the table is the ceiling). It's just a lot more foolproof and when switching from left to right, you just swing to the right miter angle (e.g., 45 or 22.5) and ignore the tilt angle. So there's one simple setting instead of two complex ones every time you round a corner.

If you're doing a lot, make a little carriage that you can clamp to your table with a stop to hold the molding in the right position.

    Bookmark   October 28, 2011 at 1:09PM
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Scarf joints work better.

    Bookmark   October 31, 2011 at 3:36PM
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