I'm making a table (you can see my previous post), the top of which
will be plywood bordered with solid oak. Now, plywood does not
expand or contract, but oak will. The table is 40" long -- If I
attach a solid oak border (the border will be a 3/4"x3.5"x40", where
the 3/4" side is facing upwards and is flush with the plywood).
What's the best way to attach the border such that I minimize
cracking and warping?
I use biscuits and never account for wood movement. I'v e never had a
problem with it myself. I've done this with mitered and butted joints
at the corners and with 1/4" to 3" wide edge bands. Basicially, to get
the hard edge to stay snugged up to the ply edge I've always had the
glue the whole length.
Also, just an FYI it's typically called "edging" or "banding" vs
As long as you're wrapping it with long grain, you've got almost no movement
in the wood. Which is why you can use almost any method you care to fix it
to the edge.
I'd put a strip of extra secondary wood underneath the top and glued to the
oak to make it mechanically stronger, and less likely to crack what is a
weak glue joint (half or more is end grain) if it receives a sharp crack to
the bottom of that 3.5" underhang.
I'm not expert like the other, but I join them saying there
is no problem.
My computer desk top is oak plywood with solid oak edging
(1"x3/4" )and is 20" by 49-1/2". I made it for my Commodore
64, to give you an idea of the age and show no separation.
The edging was applied by cutting 1/4" dadoes in the solid
oak banding and the oak plywood and they were joined by a
1/4" spline glued with carpenters glue.
I'm not the expert here but I have never had a edging crack
I have used banding for 50 years making my own by sawing veneer off of
plywood in the beginning and have had no problem with it. The desk in front
of me is edged similar to below, the printer stand beside it is banded with
thermal bonding backing.
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