The bench pin — also called a bench peg or V-slot pin — is a small, wedge-shaped block of hardwood fixed to the front edge of a jeweller's bench, projecting outward at approximately chest height. It serves as the principal working surface for hand operations including sawing, filing, graving, and stone-setting, providing a firm yet yielding support that neither damages the workpiece nor deflects cutting tools. Despite its apparent simplicity, the bench pin is arguably the most used single item on a professional jeweller's bench, and its condition directly affects the quality and safety of fine handwork.

Form and Construction

A standard bench pin is rectangular in plan, typically 100–150 mm in length and 50–75 mm in width, tapering slightly toward the free end. Its defining feature is a V-shaped notch cut into the centre of the working face, the apex of which allows a saw blade or file to pass through freely while the flanking wood supports the surrounding metal. The notch angle and depth vary by maker and by the jeweller's own preference; many craftspeople modify a fresh pin extensively with a saw, files, and drill to create a personalised array of slots, holes, and ledges suited to recurring tasks.

Hardwoods are strongly preferred. Maple and beech are the most commonly specified timbers, valued for their tight, even grain, resistance to splitting under repeated saw strokes, and ability to hold a clean edge at the notch without crumbling. Some manufacturers supply pins in fruitwoods such as cherry. Softwoods are generally avoided because they compress and splinter rapidly under file pressure, producing an unstable working surface.

The pin is secured to the bench by one of two methods: a steel screw clamp that grips the bench apron, or a tapered tang that is driven into a corresponding mortise cut into the bench top itself. The tang-and-mortise system is traditional and allows very rapid replacement of a worn pin; the clamp system offers adjustable positioning and is common on portable or modular bench setups.

Working Position and Ergonomics

Correct bench height positions the pin surface at approximately the jeweller's sternum when seated, allowing the arms to work with the elbows slightly bent and the eyes to look directly down onto the workpiece. This geometry is essential for controlled sawing: the jeweller's chest can brace lightly against the bench apron, stabilising the upper body while the hands guide the saw frame with minimal lateral movement. Filing and stone-setting similarly benefit from this upright, close-focus posture. A pin set too low forces the shoulders into a hunched position that accelerates fatigue and reduces tactile sensitivity.

Use in Sawing and Filing

When piercing sheet metal with a jeweller's saw, the workpiece rests on the flat face of the pin with the cut line positioned over the V-notch. The blade descends vertically through the notch, and the wood on either side of the V supports the metal right up to the kerf, preventing vibration and the tearing of thin gauges. The jeweller rotates the work — not the saw frame — to follow curves, keeping the blade always cutting at the apex of the V.

For filing, the pin provides a braced edge against which the work can be held firmly with one hand while the file is drawn with the other. Many jewellers cut additional small notches and ledges into the sides of their pin to cradle ring shanks, tube settings, or wire at specific angles, effectively turning the pin into a bespoke holding fixture.

Maintenance and Replacement

A bench pin is a consumable. Repeated sawing gradually widens the V-notch until the support it offers becomes inadequate; filing and graving accumulate metal filings and abrasive particles in the wood grain. Experienced jewellers keep the pin surface clean with a stiff brush — partly for hygiene and partly because precious-metal filings recovered from a worn pin and the associated bench skin (a leather apron hung beneath the pin to catch filings and dropped stones) can represent meaningful material value over time. When the notch is too wide or the wood too compressed to offer reliable support, the pin is replaced. A well-used pin in a busy workshop may last only a few months before replacement is warranted.

In the Trade

Bench pins are supplied by most jewellery tool merchants in standard dimensions, often sold in packs of three or more given their consumable nature. Replacement pins are among the least expensive items in a jeweller's tool inventory, yet their quality — specifically the straightness of the grain and the hardness of the wood — has a tangible effect on the precision of hand operations. Some specialist suppliers offer pins pre-cut with multiple notch configurations, though many professional jewellers prefer to begin with a plain pin and customise it themselves, regarding the resulting worn and notched block as a record of their own working habits.