We woodworkers spend a lot of time cutting accurate joinery. Yet even the most accurately cut joint won't be perfect if you glue it together incorrectly. Not only must you put the right amount of glue in the right places, but you also need to do the same with the clamping pressure. Some joints, such as dovetails, need pressure only in isolated spots, while others, such as thin edge-banding, need even pressure over the whole area. The answer is not fancier clamps or specialized jigs; it is shopmade clamping cauls. Quick to make and easy to use, cauls not only pull a joint tight and keep it at the correct angle, but they also protect the workpiece from direct contact with the clamp jaws.
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