Ok folks. I have my test setup complete and have results.
I made up a setup to test the strength of the glue joint between the sides of the sink and the bottom of the sink.
Here is the beginning of that setup. The red arrow is pointing to a piece of side wall that I had left over.
I glued that to a 1/4" thick piece of plywood, which is what I used for the sink bottom. The black arrow points to the plywood, while the yellow arrow is pointing to the glue joint.
The blue arrow is pointing to a 3/4" thick piece of plywood, which is only screwed to the 1/4" thick piece.
