What to Know About Woodworking Clamps
A clamp is a workholding tool that applies force between jaws, pads, straps, screws, or a toggle mechanism. Clamp style affects reach, pressure, jaw alignment, speed, and whether the clamp keeps an assembly flat and square.
Working principleMost clamps convert screw, lever, cam, pipe-thread, or ratchet movement into pressure at the jaws. Good clamp use balances pressure across the joint while keeping parts aligned instead of sliding them out of position.
Common Woodworking Uses
- Panel glue-ups and edge joining.
- Cabinet, frame, and box assembly.
- Holding jigs, fences, templates, and stops.
- Clamping parts for routing, carving, or drilling.
- Temporary fixtures and repair work.
Choosing Woodworking Clamps
- Choose jaw capacity and throat depth for the work you actually build.
- Use parallel clamps or cauls when alignment matters more than maximum pressure.
- Use many moderate clamps instead of a few over-tightened clamps for panels.
- Keep quick clamps nearby for setup and stronger clamps for glue-up pressure.
Setup
- Dry-fit the assembly before opening glue.
- Prepare clamp pads, cauls, and a flat surface ahead of time.
- Alternate clamp positions above and below panels to balance pressure.
Accessories and Consumables
- Cauls
- Clamp pads
- Clamping squares
- Glue brushes
- Assembly table
- Wax paper
- Painter's tape
- Replacement clamp pads
- Glue cleanup rags