Does anyone here use the trick of adding sand to glue to reduce
slippage? If you do, is it effective enough for you, or does it barely
make a difference? I had such a hard time when gluing up 9 pieces of a
lamination, I ended up doing the piece over. The next time, I took each
piece to the DP and drilled holes for dowels. The first lamination was
gonna get milled and stupid me had used a finish nailer every 3 pieces,
forgetting that I'd be running the completed lamination through a dado.
Besides which, with the glue causing slippage, each time I squeezed the
trigger, the pieces would move slightly. Not a good method.

When a glue-up must not slip is sand not completely up to the task? How
about for laminations?

Dave