Ring Clamp — Hand-Held Wood Clamp for Bench Work
Ring Clamp — Hand-Held Wood Clamp for Bench Work
The traditional jeweller's vice that grips a ring shank without marking the metal
A ring clamp is a small, hand-held wooden clamp used at the jeweller's bench to hold a ring or other small piece of work during sawing, filing, drilling, and finishing. The clamp's two tapered jaws close on the workpiece when the user squeezes the body, holding the ring securely without the marring that would result from a metal vice. It is one of the older and more durable bench tools in use, and most working jewellers carry several at different scales for different jobs.
Construction
A traditional ring clamp is turned and split from a single hardwood blank — typically beech, lignum vitae, or boxwood — with a wedge slot at one end and a leather-padded jaw inside. A wooden wedge driven into the slot closes the jaws around the workpiece. The opposite end of the same clamp carries a second jaw set, often at a slightly different scale, so a single tool covers small to medium ring sizes. The leather lining at the gripping faces protects polished metal from compression marks.
Variants in current production include all-wood traditional patterns, plastic-jawed types with a thumbscrew rather than a wedge, and hinged hard-plastic versions popular in beginner courses. Each pattern has trade-offs in grip strength, padding, and the speed with which the work can be repositioned.
Bench use
The clamp is held in the palm of the hand or braced against the bench pin. Holding it freehand allows the work to be rotated freely against the file or saw; bracing against the pin frees both hands for tool work. The combination of the clamp and the bench pin is the standard setup for fine sawpiercing, internal filing of shanks, and clean-up of cast components.
For sizing operations where heat is applied — for example, soldering a sizing piece into a shank — the work is removed from the clamp and held with cross-locking tweezers or a third-hand fixture instead. Wood and leather are not torch-friendly.
Limitations
Ring clamps are not suitable for heavy stock removal, where the side loading exceeds the wedge's grip and the work moves in the jaws. For substantial filing or stock removal, a metal bench vice with shaped soft jaws or a dedicated ring vice is the appropriate tool. The hand clamp's strength is in the speed of repositioning, not in absolute grip force.
Care and longevity
A traditional wooden clamp benefits from occasional re-leathering and a light oil rub on the wedge surfaces to prevent binding. With minimal maintenance the tool will outlast most other items at the bench. Replacement leather pads are available from any major jewellery supply house. The wedge should be kept loose between jobs to prevent the wood drying around it.
In the trade
The ring clamp is one of the few bench tools whose form has barely changed in two centuries. Its persistence is a matter of fit-for-purpose: there is no faster way to grip and reposition a small ring against a file or saw than a properly leathered wooden clamp. Beginners often dismiss it in favour of more sophisticated holding devices and return to it within a year of bench practice.