While it’s frequently said that you can never have too many clamps, often the real problem is not having ones long enough for the job at hand. Ideal for those situations, these unconventional clamps are not limited by the length of their bars. Driven by an Acme-threaded screw, one jaw registers against an outside face of the work, while a cam-action clamp serves as the opposing jaw, grasping the work a short distance from the joint. This not only lets you secure work much longer than the clamp itself, but the short span also helps prevent long stock from bowing.
Unchanged in over a quarter century, they are still produced by the Dubuque Clamp Works in Iowa, cast from lightweight, rigid aluminum. On the 11-3/4" long face-frame model, the cam jaw is oriented horizontally; the 9" shelf clamp has a vertically aligned cam jaw. Both accept stock from 5/8" to 7/8" thick.
Available separately, the medium jaw bracket accepts stock from 13/16" to 1-1/16" thick, and the large bracket holds material 1-5/16" to 1-1/2" thick. An optional three-piece miter attachment set converts the face-frame clamp into a miter clamp suitable for stock from 3/4" to 5-1/4" wide. It includes inside and outside jaw brackets plus a base for benchtop mounting (#8 screws not included). The inside bracket has textured surfaces for grip, and openings on either face of the outside bracket allow access for installing fasteners.