On Mon, 17 Feb 2020 16:46:21 -0800 (PST), Michael
wrote:

On Monday, February 17, 2020 at 6:37:09 PM UTC-6, Robbie Brusso wrote:
I had planned on using box joints to build the frame of a hanging cabinet (top, bottom, sides). However, I'm starting to wonder about the weight bearing ability of the bottom frame member. The tapers of a dovetail would make me feel a little better but with a box joint I wonder about the load bearing ability of the bottom member. Thoughts?

Well made box joints will easily hold up the weight and then some.

If it's the bottom, you're loading a glue line in shear. If you are
using a glue that absolutely positively does not creep (which lets out
just about any PVA glue) you might be OK. But that's what dado joints
are made for.