[Mgx3d] has done that by designing 3D printable bar clamp jaws with a quick release mechanism that can be used with standard T-slot aluminum extrusion. This allows you to create ad-hoc bar clamps ...

while larger bar clamps are a better option for wider applications like cabinetry or drawer construction. Pipe clamps offer the most width–you’re only limited to the length of pipe being used ...

Clamp a bar or pipe clamp in your bench vise, then tighten the clamp to grip the workpiece at each end. Your future masterpiece won’t move a smidgen while you work, and you’ll have access to ...

Store bar and pipe clamps right under your workbench where they'll always be close at hand. Just screw sections of 4-in.-dia. PVC pipe under your workbench and slide the clamps into the pipe.