wrote in message
...
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?

Yep, though strength is not usually an issue, unless it is for gussets or
sheer webs.

To prepare plywood for max glue strength, use a cabinet scraper before glue
is applied. Don't let a lot of time elapse between the scraping and gluing.
--
Jim in NC