{"product_id":"heavy-duty-perforated-casting-flask-stainless-steel-4-x-5-7-medium-size-vacuum-casting-1-8-wall-thickness","title":"Heavy Duty Perforated Casting Flask, Stainless Steel, 4\" x 5.7\", Medium Size, Vacuum Casting, 1\/8\" Wall Thickness","description":"\u003cp\u003eFor jewellery casters using the lost-wax vacuum method, this heavy-duty flask is a workshop essential. Its perforated design ensures an even vacuum draw through the investment, which is critical for a complete fill and a clean surface finish on precious metal castings.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePerforated walls allow consistent vacuum pressure across the entire investment.\u003c\/li\u003e\n\u003cli\u003eConstructed from heavy-duty stainless steel with a 1\/8\" wall thickness for durability.\u003c\/li\u003e\n\u003cli\u003eFeatures a wide, solid flange for a secure seal against the vacuum table gasket.\u003c\/li\u003e\n\u003cli\u003eSized at 4\" x 5.7\" to fit standard medium-scale jewellery vacuum casting machines.\u003c\/li\u003e\n\u003cli\u003eDesigned for repeated heating and cooling cycles in a casting burnout kiln.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho it's for\u003c\/h3\u003e\n\u003cp\u003eBuilt for professional UK jewellery makers, small-scale casting houses, and dental lab technicians who rely on vacuum-assist casting. It is suitable for casting precious metals like gold and silver, as well as non-precious alloys where a high-quality surface is required.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 4\" (approx. 102mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 5.7\" (approx. 145mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWall Thickness:\u003c\/strong\u003e 1\/8\" (approx. 3.2mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"ts-trust\"\u003e\u003cstrong\u003eFree UK delivery\u003c\/strong\u003e · \u003cstrong\u003eSame-day dispatch\u003c\/strong\u003e before 2pm · \u003cstrong\u003e30-day returns\u003c\/strong\u003e\u003c\/p\u003e\n\u003cspan data-toolsmith-sku-index style=\"position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden\" aria-hidden=\"true\"\u003eSKU: 62-2OIP-3D4F\u003c\/span\u003e\n\n\u003c!-- TS:RELATED-GUIDES v1 --\u003e\n\u003cdiv class=\"ts-related-guides\" style=\"margin-top:2em;padding:1em;border-top:1px solid #e0d4c0;\"\u003e\n\u003ch3 style=\"margin:0 0 .5em 0;font-size:1.1em;\"\u003eRelated buying guides\u003c\/h3\u003e\n\u003cul style=\"margin:0;padding-left:1.2em;\"\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/news\/setting-up-a-jewellery-bench-uk-essentials\"\u003eSetting Up a Jewellery Bench: 12 Essentials UK Bench Jewellers Actually Use\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/news\/jewellers-saw-frames-and-blades-uk-guide\"\u003eJeweller's Saw Frames and Blades: Pick the Right Combo\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/blogs\/news\/uk-hallmarking-guide-jewellery-makers-2026\"\u003eUK Hallmarking Guide for Jewellery Makers (2026)\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/jewellery-making-tools\"\u003eBrowse all Jewellery Making Tools\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Toolsmith Ltd","offers":[{"title":"Default Title","offer_id":53138468634967,"sku":"62-2OIP-3D4F","price":24.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1005\/1623\/3559\/files\/toolsmith-rebg-heavy-duty-perforated-casting-flask-stainless-steel-4-x-5-7--1777629030.jpg?v=1777629042","url":"https:\/\/www.toolsmithltd.co.uk\/products\/heavy-duty-perforated-casting-flask-stainless-steel-4-x-5-7-medium-size-vacuum-casting-1-8-wall-thickness","provider":"Toolsmith Ltd","version":"1.0","type":"link"}