Joining Mitered Corners

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Forum topic by TheWoodenOyster posted 01-23-2014 04:41 PM 1752 views 0 times favorited 2 replies Add to Favorites Watch
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1317 posts in 1935 days

01-23-2014 04:41 PM

Topic tags/keywords: joining

Hey guys,

I am looking to make a floating entertainment shelf for my mom. Just a floating box with sliding doors on the front. Basically just a mitered corner box on its side with doors on the front. Anyway, she wants it to be 5 feet long by 14 inches deep by 7 or 8 inches tall. She wants it out of walnut, and I am thinking walnut plywood would likely be the best option for something like this. My question is this: What is the best way to join those mitered corners? Dovetails won’t work because plywood endgrain isn’t exactly beautiful. I have thought about the following options:

1. Splined corners
2. Biscuit reinforced miters
3. Keyed miters

I haven’t done many mitered corners in my time, so I am looking for the best feasible option in my situation


-- The Wood Is Your Oyster

2 replies so far

View HerbC's profile


1756 posts in 2860 days

#1 posted 01-23-2014 04:56 PM

Splined corners (splines parallel to joint, not across the joint) would be relatively simple, add quite a bit of strength and present a clean uncluttered look. Use solid wood strip glued to edge of plywood to provide a finished look. Strip could be wide enough to include grooves for the sliding door(s)...

Good Luck!

Be Careful!


-- Herb, Florida - Here's why I close most messages with "Be Careful!"

View bladeburner's profile


88 posts in 3087 days

#2 posted 01-23-2014 06:36 PM

60 X 14 is a lot to push across a tablesaw w/o a sled. Any drag upon the workpiece will ruin the cut and a crisp bevel on plywood is tough enough under the best conditions. Cutting the spline kerf in a long piece will be tough as there will be very little table on that side of the saw table. All that said:

I would make panels for the ends (hides the end cuts) and face frame the front. Also convenient to run the grooves for the sliding doors. A 3/8 – 3/4 back, rabbeted into all four sides will tie it altogether and provide a hanging rail for the wall.


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