On Mon, 14 Jul 2008 07:44:48 -0500, cavelamb himself
wrote:

Stealth Pilot wrote:

On Sun, 13 Jul 2008 17:11:42 -0700 (PDT), "
wrote:


Sanding beaks the fibers producing a less strong lap joint.
So what if you use good one side plywood - is the lap joint going to
be weaker because it is sanded?



I seem to recall that Birch faced plywood, because of the heat and
pressure used in making it, has to be santed to break the surface
glaze before gluing.

Mahogany and the rest don't have that problem.

One of the Mil Spec docs?



Richard

all plywoods should be sanded because all plywoods are heated and
pressed between steel plates to make them.
the glue is presented as a film between the wood plys. the heating
activates it as a bonding agent.

....well, all as in all the plywoods you'd consider using.
there are probably plywoods made in asia by people and water buffaloes
sitting on them.

Stealth Pilot