I've got the basic boxes of two of my bookcases built, stained and
finished (inside surfaces only; the outsides of these won't show).
Looking forward to the face frames, I wondered how far apart to put the
clamps when I glue them on. I intend to use pocket screws around the
perimeter (again, because the outsides of these "built-in" units won't
show), but I think the frame pieces that edge the front of each shelf
(they are all fixed) will simply be glued and clamped. The frames will
be screwed and possibly glued together as a unit beforehand.
So I did a little searching online and found that some people recommend
festooning practically every square inch of any mating pieces with
clamps, even when there doesn't seem to be any obvious stress involved.
Can this really be necessary, or is it simply to prove the old adage?
Here's how I glued up the boxes:
I didn't worry too much that I only clamped the dado joints at the top
(actually the back) and bottom (actually the front) of the units. Should
I have? The quick-grip clamps at either end of the units were just to
hold the sides on while I applied the other clamps, by the way. Could
there be enough flex in 12" of plywood that there would be insufficient
pressure in the middle? When I glue up the next two units, should I put,
say, a 12" piece of 2x3 on the outside of the box opposite each dado
joint to help spread the pressure to the middle of the plywood sides?
I could of course have simply used screws, as the sides of these units
won't show. But one side of each of the next two units will be exposed,
and I figured I might as well get in some practice.
Thin as my experience is, I have glued together some boxes before, and
my intuition tells me these aren't coming apart, especially once I put
the backs and the face frames on. Is that wrong?