laminating multiple ply layers

When I laminated Dakota's three layer bottom and four layer shoe, I
pre-drilled the inner layers for screws on a 6" x 6" grid pattern.
Seeing thickened epoxy ooze up into the screw holes as I drew the
layers tight together gave confidence that there were no "holidays".
Since I was building right side up, I used lots of clamps along the
edges, and a few long poles wedged against the shop rafters as well to
keep the layers pressed tight together until the epoxy set up.

Vince