|When edge gluing boards, I use scrap blocks to distribute the
clamping pressure and avoid marring the edges. But sometimes the blocks shift
out of position or fall to the floor before I get the clamps tightened. To
solve this problem, I made a number of U-shaped clamp blocks that slip over the
edge and stay right where I put them (see photo).
The secret is a piece
of self-adhesive weatherstrip (see inset) attached to the top and bottom of the
jaws of each block. When you slip the block over the edge of the
workpiece, it compresses the weatherstrip, as you can see in the drawing below.
This provides just the right amount of resistance to hold the block in