On Tue, 18 Feb 2020 08:21:58 -0500, knuttle
wrote:

On 2/18/2020 7:28 AM, Jack wrote:
On 2/17/2020 8:20 PM, Robbie Brusso wrote:
Haha sorry for the confusion - I guess my concern is the cabinet floor
(bottom of the cabinet). I've
usually just used pocket holes and joined to the sides that way. However
I wanted to use box joints this time. But then I started to wonder if
glue alone would secure the bottom of the cabinet to the sides. If it
helps at all, this is a wall mounted cabinet that will go above a toilet
in a bathroom.

Box joints are more than strong enough for this purpose. You're wringing
your hands for nothing.Â* If you're thinking the glue will fail, (it
won't) you could pin them with a dowel which will even enhance the
esthetics of the joint.Â* My first workbench with drawers I built the
drawers this way (45 years ago), before I realized how strong glue was.
Â*Box joints have lots of good gluing surface, making the joint very
strong. MUCH stronger than pocket hole joints.

I think if you do some research in many cases glue joints are stronger
that the wood that they are holding together.

They are and aren't. If you glue a couple of pieces of wood together
and then bust the joint, it will fail in the wood. However if you
take the same two pieces, hang them by a hole in one and hang a weight
on the other, so the glue is loaded in shear, you may find that after
a while they have come apart. It's called "creep"--slow movement of a
joint loaded in shear under continuous stress.