{"product_id":"otoolworld-graphite-ingot-mold-for-1-4-1-2-1-oz-bars-3-cavity-heat-resistant-low-stick","title":"OTOOLWORLD Graphite Ingot Mould for 1\/4, 1\/2 \u0026 1 oz Bars — 3-Cavity Heat-Resistant, Low-Stick","description":"\u003cp\u003e\u003cstrong\u003eOTOOLWORLD's graphite ingot mould forms precise 1\/4, 1\/2 and 1 troy ounce gold bars and compatible silver castings with consistent shape and clean release.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you melt and cast small amounts of precious metal—gold, silver or copper—this compact graphite mould gives repeatable bar shapes and easy de-moulding. The low-thermal-expansion graphite resists sticking and tolerates repeated heating cycles, while the three cavity sizes let you pour multiple standard weights from a single tool. Dimensions and cavity measurements are engineered for small-scale refineries, hobbyists and metalworkers who need accurate, portable casting equipment.\u003c\/p\u003e\n\n\u003ch3\u003eWhat sizes and weights will this graphite mould produce?\u003c\/h3\u003e\n\u003cp\u003eThis mould contains three cavities sized to deliver standard small bars: 1\/4, 1\/2 and 1 troy ounce for gold, and matching silver sizes commonly used by small refineries. Each cavity has a shallow depth and a rectangular footprint optimised for quick solidification and easy handling. Exact inner measurements are provided so you can calculate capacity and confirm fit with your pouring technique or previous pouring results.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/4 troy ounce gold cavity: 0.175\" depth x 0.260\" x 0.775\" (0.45 x 0.66 x 1.97 cm)\u003c\/li\u003e\n  \u003cli\u003e1\/2 troy ounce gold cavity: 0.175\" depth x 0.365\" x 1.1\" (0.45 x 0.93 x 2.8 cm)\u003c\/li\u003e\n  \u003cli\u003e1 troy ounce gold cavity: 0.175\" depth x 0.462\" x 1.2\" (0.45 x 1.2 x 3.1 cm)\u003c\/li\u003e\n  \u003cli\u003eAlso fits silver bar sizes roughly 6 g, 10 g and 15.6 g\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and heat-resistant is the OTOOLWORLD graphite mould?\u003c\/h3\u003e\n\u003cp\u003eGraphite is chosen for small ingot moulds because it withstands high temperatures, has low thermal expansion, and minimizes adhesion to melted metal. This mould is built for repeated heating and cooling cycles typical of hobby or bench casting, helping preserve cavity detail and shape. With routine care—avoiding mechanical shock and rapid temperature swings—it will deliver consistent pours across many sessions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMaterial: high-grade graphite for thermal resilience\u003c\/li\u003e\n  \u003cli\u003eDesigned for repeated melts and pours without deformation\u003c\/li\u003e\n  \u003cli\u003eLow metal adhesion reduces need for release agents\u003c\/li\u003e\n  \u003cli\u003eAvoids sudden quenching and physical impact to prolong life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I use this mould safely and get clean castings?\u003c\/h3\u003e\n\u003cp\u003eUse a steady, controlled pour from a proper melting crucible and preheat the mould slightly if needed to reduce thermal shock. Keep the cavity free from debris and follow standard safety precautions: protective gloves, eye protection, adequate ventilation, and fire-safe surfaces. After pour and cooling, remove the bar gently to prevent chipping of the graphite or the casting.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePreheat mould slightly to minimize cracking and bubbling\u003c\/li\u003e\n  \u003cli\u003ePour from a steady, well-controlled crucible spout\u003c\/li\u003e\n  \u003cli\u003eAllow full cooling before de-moulding to prevent distortion\u003c\/li\u003e\n  \u003cli\u003eWork on a stable, fireproof surface with PPE and ventilation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do the mould's outer dimensions and form factor affect workshop use?\u003c\/h3\u003e\n\u003cp\u003eThe mould's compact footprint makes it easy to store, transport, and position within a small bench setup. With outside measurements of approximately 1.65\" x 2.25\" x 0.45\" (4.2 x 5.7 x 1.15 cm), it fits into a small toolkit and can be used by jewellers, coin and bar producers, or metal hobbyists. Its shallow profile permits quick cooling while remaining rigid enough for repeated handling.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eOutside dimensions: 1.65\" x 2.25\" x 0.45\" (4.2 x 5.7 x 1.15 cm)\u003c\/li\u003e\n  \u003cli\u003eShallow depth promotes faster solidification\u003c\/li\u003e\n  \u003cli\u003eCompact size for bench-scale operations and travel\u003c\/li\u003e\n  \u003cli\u003eLightweight and easy to store between uses\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This OTOOLWORLD graphite ingot mould is tailored for small-scale refiners, jewellers, coin and bullion hobbyists, and metal-crafting enthusiasts who need reliable, repeatable small-bar castings. It is ideal for users who melt modest quantities of precious metal and value a portable, durable mould that produces clean edges and standard weights. If you require larger or commercial-scale production, consider multi-cavity or industrial moulds, but for bench-top precision and convenience this mould balances size, accuracy and durability.\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: Can this mould be used for both gold and silver?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s sized for 1\/4, 1\/2, and 1 troy ounce gold and fits common small silver bars (about 6 g, 10 g, 15.6 g).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need a release agent with this graphite mould?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Often unnecessary—graphite resists sticking—but a light mould release or preheating can improve results for very small pours.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"OTOOLWORLD","offers":[{"title":"Default Title","offer_id":55251237929297,"sku":"B01M19VUWP","price":29.91,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/5567\/3681\/files\/otoolworld-graphite-mold-front-view_401b1415-8a8b-4d41-820e-bca7a379787a.jpg?v=1791642621","url":"https:\/\/craftiche.co.uk\/products\/otoolworld-graphite-ingot-mold-for-1-4-1-2-1-oz-bars-3-cavity-heat-resistant-low-stick","provider":"Craftiche","version":"1.0","type":"link"}