For what it is worth i built a PA sub (2x3015lf, 9 cu ft) using the 'suspect' thin outer ply BB and PL. Been using it for over a year with no problems. It has spline bracing throughout also held in with PL onto the outer ply.
An alternative to dadoes/rabbets/biscuits/etc. is to simply drill small holes along the bonding joint to let the pl get to the inner plies.
Robby
Very cool! That's saves me a bunch of trouble/time. Okay, going to do the PL with some of those seep holes and use the "spoon" fillet technique on GB's site.
Thank you!!
