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B A R R Y

wrote:

it's close, and it will work, if you make suru the 3/4" bottom panels
are well attached 4 sides to a rib and that that rib is well bonded to
the top.

As Bridger points out, the entire skin is structural. If properly glued
to the sringers, it'll be incredibly strong.

Good quality plywood stringers will be far stronger around the corners
than hardwood. Plywood has many plies with alternating grain direction
to carry the load. A hardwood stringer would have some directions that
aren't as strong as the others. The stability of the plywood will also
help the joints and bonds last.