Geometric Blank Cutter — Pentagon, 4 Steel Punches, 12-27 mm, Jewellery Die Set

Five-sided blanks for geometric work: pentagons at roughly 12 mm, 18 mm, 21 mm and 27 mm across (12 × 13 mm up to 27 × 26 mm), each punched from sheet with one mallet strike. They serve as components for geometric jewellery, inlays for models, and uniform bases for enamelling or stamping — anywhere straight sides and true angles matter.

The set weighs about 1.2 kg all in; the block (roughly 76 × 76 mm) and punches are carbon tool steel, hardened and tempered so the corners of the cutting edges stay defined. Anneal your silver or copper first, keep sheet to 18 gauge (1.02 mm), strike the bevelled end with a brass or nylon mallet, and use cutting fluid.

• Creating geometric jewellery components
• Producing decorative inlays for models
• Fabricating uniform blanks for enamelling or stamping

• Block and punches machined from hardened, tempered carbon tool steel.
• Includes four pentagon punches: 12 mm, 18 mm, 21 mm, and 27 mm (approx).
• Cuts non-ferrous metals like silver and copper up to 18 gauge (1.02 mm).
• Solid steel die block measures approximately 76 x 76 mm (3 x 3 inches).
• Total set weight is approximately 1.2 kg.