Heart Blank Cutter Set — Wide Profile, 4 Steel Punches, 12-22 mm, Jewellery Tool
£99.99
Sale price £99.99Regular price
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The fuller, rounder of our two heart profiles, with near-square proportions: 12.08 × 12.27 mm, 14.6 × 14.83 mm, 17.57 × 17.85 mm and 21.44 × 21.57 mm. Blank them in matched pairs for earrings or graduated runs for pendants and charms — the punch gives you the symmetry that makes a heart read properly.
Block (76 mm square) and punches are hardened carbon tool steel. The set cuts silver, copper and other non-ferrous sheet up to 18 gauge (1.02 mm); strike the bevelled end with a suitable mallet and use cutting lubricant so the curved edges stay sharp through repeated work.
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.
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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