assembling a box or drawer, I feel like I need two pairs of hands -
one to hold the assembly square and another to apply the clamps. To
make things a little easier, I came up with some squaring blocks to
help hold the pieces square while I clamp them together.
I made my squaring
blocks out of plywood. The base is just a square piece of 3/4"
plywood. The top layer is actually made up of three separate pieces
of plywood, see detail drawing at right. The trick is to glue these
three pieces down squarely to the base so that the space in between
them matches the thickness of the workpieces you are clamping up.
To use the squaring
blocks, simply place one under each corner of the assembly before clamping
the pieces together.