This disc cutter set allows you to punch clean, consistent wide heart shapes from non-ferrous metal sheet. The set includes a solid 76 mm square steel block and four corresponding punches, all machined from hardened carbon tool steel for durability.
The four included punch sizes are 12.08x12.27 mm, 14.6x14.83 mm, 17.57x17.85 mm, and 21.44x21.57 mm. For the cleanest cuts and to prolong the life of the cutting edges, we recommend using a cutting lubricant and striking the punch with a suitable mallet. The tool is effective on sheet up to 18 gauge (1.02 mm).
Use this tool to create pendants, charms, and decorative elements for jewellery. It is also useful for model makers and crafters needing to produce repeatable heart-shaped metal components.
Cutter block and punches are machined from high-carbon tool steel.
Includes four wide heart punches: 12.1, 14.6, 17.6, and 21.5 mm (approx).
Cuts non-ferrous sheet metal like silver and copper up to 18 gauge (1.02 mm).
The solid steel cutter block measures 76 x 76 mm (3 x 3 inches).
Each punch has a sharp cutting face and a beveled end for striking.
Only 5 left at the benchSame-day Birmingham dispatch on weekday orders before 2pm.
Our steel letter, number, and design punches are heat-treated to strike non-ferrous metals: silver (sterling, fine), copper, brass, bronze, aluminium, gold. Striking hardened steel will damage the face. For pewter and very soft alloys, use light strikes.
What size impression do I need?
1–2 mm for ring shanks and small pieces (initials, hallmark-style); 3–4 mm for pendant backs and signed plaques; 5 mm+ for presentation pieces and stamped jewellery components. Bigger is not always better — a clean small mark reads better than a struggle with an oversized one.
What do I strike it with?
A 1–2 lb brass mallet on a polished steel bench block. Do not use a steel hammer — it will deform the punch over time. One firm strike beats two soft ones for a clean impression.
How do I keep the punch sharp?
Polished punches stay sharp for thousands of strikes if you are hitting cleanly on a flat block. If the face starts blurring impressions, polish lightly with 600-grit emery, then a buffing mop on a polishing motor. Replace before the face deforms further.
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