A draw plate is a hardened steel plate pierced with a graduated series of tapered holes through which wire or tube is pulled to reduce its diameter and refine its cross-section. One of the most fundamental tools on any jewellery bench, the draw plate allows a craftsperson to produce wire of precise gauge and profile from heavier stock, working the metal progressively through successively smaller openings until the desired dimension is achieved.

Construction and Form

Draw plates are typically manufactured from hardened and tempered tool steel, though tungsten carbide inserts are used in higher-specification versions for extended wear resistance. The holes — sometimes called draws or dies — are tapered: the entry side is wider, allowing the wire to be threaded through, while the exit side corresponds to the finished diameter. Holes are arranged in a graduated sequence, usually numbered or sized in millimetre increments, so the craftsperson can move the wire through a controlled series of reductions rather than attempting a single large step, which would risk snapping the wire or damaging the plate.

Draw plates are available in a range of profiles to suit different applications:

• Round — the most common, used for standard round wire in all gauges
• Half-round — produces wire with one flat and one domed face, widely used in ring-making and bezel setting
• Square and rectangular — for box-section wire used in gallery strips and geometric settings
• Triangular and oval — specialist profiles for decorative wirework and particular setting styles
• Tube draw plates — designed to reduce the diameter of tubing while maintaining the bore, used in hinge-making and tube-setting

The Drawing Process

Before drawing begins, the leading end of the wire must be tapered — typically by filing or hammering — to a point narrow enough to pass through the target hole and be gripped on the exit side. The wire is lubricated, traditionally with beeswax or a proprietary drawing lubricant, to reduce friction and heat. The tapered end is then threaded through the chosen hole and gripped with draw tongs or a draw bench vise, and the wire is pulled through in a single smooth, continuous motion.

Each pass through the plate work-hardens the metal: the crystalline grain structure of the alloy is compressed and elongated, increasing tensile strength and hardness while reducing ductility. After several passes, the wire becomes too stiff and brittle to draw further without risk of fracture. At this point, annealing — heating the wire to a controlled temperature and allowing it to cool — restores ductility by recrystallising the grain structure, after which drawing may continue. The cycle of drawing and annealing is repeated as many times as necessary to reach the final gauge.

The Draw Bench

For heavier stock or longer lengths, a draw bench replaces hand-held tongs. The plate is clamped at one end of a sturdy wooden or metal bench, and a chain-and-hook mechanism, operated by a hand crank or foot pedal, pulls the wire through with greater mechanical advantage and more consistent force. Draw benches are standard equipment in production workshops and are particularly suited to reducing rod stock into wire or drawing tube to precise tolerances for hinge and finding manufacture.

In the Workshop

The draw plate is indispensable wherever wire of a specific gauge or profile is required but commercially available stock does not match the craftsperson's needs. It allows the jeweller to work from a limited inventory of heavier rod or wire and produce fine gauges on demand, to convert round wire into a shaped profile, or to true up wire whose diameter has become inconsistent. In filigree work, granulation, and chain-making — traditions in which wire gauge and surface quality are critical — the draw plate gives the maker direct control over the material that no catalogue purchase can replicate.