I'm helping a sculptor build a really big table and chairs (the 12' table legs are 12x12's). The table is 2 bents with mortise and tenon joints for the "cross beams" and "plates" which join the top of the table leg at the same height.
My problem is that the sculptor requires 2 timbers that run diagonally 2' off the ground (imagine an "X" if looking down from above) between opposite corner table legs. What kind of joinery should I use where these meet the legs? I think a simple mortise and tenon will result in something that can't be assembled.
