{"product_id":"otoolling-blank-challenge-coins-25-pack-40mm-x-3mm-matte-black-engrave-ready-iron","title":"Otoolling Blank Challenge Coins 25-Pack 40mm x 3mm Matte Black — Engrave-Ready Iron","description":"\u003cp\u003e\u003cstrong\u003eOtoolling 25 Pack Blank Challenge Coins are 40mm diameter, 3mm thick matte-black iron coin blanks designed for precise engraving, stamping, and custom finishing.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese coin blanks arrive as a bulk set of 25 perfectly flat, round medallions with threaded edges and a fingerprint-resistant matte black coating. Each piece is made from a solid iron core so it resists warping under pressure and heat, and the dark surface peels away cleanly when engraved to reveal crisp high-contrast metal beneath. Every coin is individually sealed in a transparent acrylic capsule and organized in a sturdy plastic box, protecting finished or unfinished surfaces during storage and transit.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these blanks perform with different engraving and marking machines?\u003c\/h3\u003e\n\u003cp\u003eOtoolling blanks are engineered for broad tooling compatibility. The iron substrate and coating work reliably with diode, fibre, and CO2 lasers, and can also handle conventional metal stamping or punching. Expect clean removal of the matte finish with sharp linework and excellent legibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWorks with diode, fibre, and CO2 laser systems for detailed etching.\u003c\/li\u003e\n  \u003cli\u003eCompatible with manual metal stamping punches for traditional impressions.\u003c\/li\u003e\n  \u003cli\u003eSolid iron core minimizes warping during heavy tooling or heat exposure.\u003c\/li\u003e\n  \u003cli\u003eCoating peels cleanly to reveal high-contrast metallic details.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat size and finish should I expect for custom projects or rewards?\u003c\/h3\u003e\n\u003cp\u003eEach coin is 40 mm (1.57 inches) across and 3 mm (0.12 inches) thick, a widely used dimension for challenge coins, tokens, and markers. The matte black coating offers a modern, non-reflective surface ideal for fine engraving and high-contrast designs once the top layer is removed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDiameter: 40 mm (1.57 inches) — standard sizing for challenge coins.\u003c\/li\u003e\n  \u003cli\u003eThickness: 3 mm (0.12 inches) for a sturdy, substantial feel.\u003c\/li\u003e\n  \u003cli\u003eMatte black, fingerprint-resistant coating for a clean working surface.\u003c\/li\u003e\n  \u003cli\u003eFlat faces on both sides allow full-area customization without pre-drilled holes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow are the coins packaged and protected during transit?\u003c\/h3\u003e\n\u003cp\u003eEach blank comes enclosed in its own snap-tight acrylic capsule, and all capsules are housed in a durable plastic organiser box. This individual protection prevents scuffs, dings, and abrasion so creatives receive pieces ready for immediate tooling or finishing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIndividual acrylic capsules prevent surface friction and scratches.\u003c\/li\u003e\n  \u003cli\u003eSturdy organiser box keeps twenty-five coins organized and secure.\u003c\/li\u003e\n  \u003cli\u003ePackaging supports safe storage between production steps.\u003c\/li\u003e\n  \u003cli\u003eReady-to-tool condition on arrival minimizes prep time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat creative uses are these blanks best suited for?\u003c\/h3\u003e\n\u003cp\u003eThese coin blanks are versatile for many craft and small-business applications. Use them for personalised challenge coins, geocache tokens, golf ball markers, tabletop game currency, military-style medallions, or retail-quality custom keepsakes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommemorative challenge coins and military-style medallions.\u003c\/li\u003e\n  \u003cli\u003eGeocaching tokens and distinctive pathfinder markers.\u003c\/li\u003e\n  \u003cli\u003eGolf ball markers or high-end tabletop gaming coins and chips.\u003c\/li\u003e\n  \u003cli\u003eCustom retail items and personalised gift projects in small batches.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Otoolling 25 Pack is aimed at makers, engraving shops, small-batch retailers, and hobbyists who need reliable, ready-to-tool metal blanks for detailed customization. If you run a laser engraving service, produce bespoke challenge coins, or create personalised metal gifts, these matte-black iron blanks deliver a stable substrate, consistent tooling results, and protective packaging that speeds production and preserves finish quality.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these coins laser-ready out of the box?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The matte black coating peels neatly under laser marking, revealing high-contrast metal ideal for sharp engraving.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do the blanks include holes for keyrings or mounting?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. Each blank has flat faces without pre-drilled holes, allowing you to choose hole placement or leave them solid.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Otoolling","offers":[{"title":"Default Title","offer_id":55302265471313,"sku":"B0H8C6JLWF","price":72.06,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/5567\/3681\/files\/otoolling-front-packaging-25-pack.jpg?v=1791982342","url":"https:\/\/craftiche.co.uk\/products\/otoolling-blank-challenge-coins-25-pack-40mm-x-3mm-matte-black-engrave-ready-iron","provider":"Craftiche","version":"1.0","type":"link"}