This disc cutter set allows you to produce clean, repeatable shamrock-shaped blanks from sheet metal. The set includes a solid steel die block and three corresponding punches, each machined from hardened tool steel for a durable cutting edge.
The three included punch sizes (11.72x14.65 mm, 17.22x13.79 mm, and 19.61x15.71 mm) offer versatility for creating pendants, charms, and decorative elements. For best results and to prolong tool life, use a suitable cutting lubricant and work with annealed metal up to 1.02 mm (18 gauge).
This tool is ideal for jewellers creating themed collections, craftspeople making custom metal tags, or model makers adding decorative details to their work.
Quality & compliance
Manufactured by an ISO 13485:2016-certified medical device producer (Cert. PK250801003, LMS Assessments Limited — IAF/EGAC accredited). EU MDR Authorised Representative in place for 2025-2026. All steel and surface treatments meet the REACH directive (EC 1907/2006). View our supplier certificates.
Cuts three distinct shamrock-shaped blanks from non-ferrous sheet metal up to 18 gauge (1.02mm).
Punches and die block are machined from hardened and tempered high-carbon tool steel.
Includes three punch sizes: 11.7x14.7 mm, 17.2x13.8 mm, and 19.6x15.7 mm (approx).
The solid steel die block measures approximately 64 x 89 mm (2.5 x 3.5 inches).
Designed for use with a jeweller's hammer on a sturdy bench block or anvil.
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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