After many hours each week of work involving travel out of town, I have finally had some time of vacation over the holidays to work on my bench tops. I decided to build torsion boxes for the bench tops, using 3/4” plywood for the tops and internal grid and 1/2” plywood for the bottom. The internal grid is 2 3/4” wide strips, notched to interlock. They are attached to the 3/4” plywood top with glue and pocket hole screws.
The bottom is attached to the grid with glue and wood screws.
I also embedded two Kreg Klamp tracks into the corner of one of the tops, to enable the pocket hole assembly process, as well as other tasks.
Thanks for reading.
-- Scott in Texas