{"product_id":"3kg-electric-melting-furnace-to-melt-gold-silver-and-copper-demo-unit","title":"3kg Electric Melting Furnace for Gold, Silver \u0026 Copper – DEMO","description":"\u003cp\u003e\u003cstrong\u003eDemo Unit:\u003c\/strong\u003e The inner ceramic chamber shows cracking from temperature fluctuations. This is the disclosed condition of the demo unit and is not expected to interfere with its operation.\u003c\/p\u003e\n\u003cp\u003eA 3kg electric melting furnace for melting and casting metals including gold, silver, copper, aluminium, lead, tin, zinc and sterling silver. The furnace combines a high-temperature ceramic melting chamber, graphite crucible and digital PID temperature control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Temperature:\u003c\/strong\u003e Up to 1150°C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3kg Graphite Crucible:\u003c\/strong\u003e High-purity graphite with good thermal conductivity and a pouring groove for easier transfer of molten metal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePID Temperature Control:\u003c\/strong\u003e Digital control system with a K-type thermocouple monitors the furnace temperature for accurate operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulated Design:\u003c\/strong\u003e High-temperature-resistant ceramic chamber and insulated lid help retain heat during melting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Suitable for workshop and metal-casting applications involving gold, silver, copper and other compatible metals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant Safety \u0026amp; Operating Information\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRead the instruction booklet supplied with the furnace before use.\u003c\/li\u003e\n\u003cli\u003eDo not exceed 70% of the maximum crucible capacity.\u003c\/li\u003e\n\u003cli\u003eBefore use, preheat the machine and crucible to 300–500°C for 3–5 minutes to help prolong crucible life.\u003c\/li\u003e\n\u003cli\u003eThe maximum continuous working time is 3 hours. After 3 hours, switch the machine off and allow it to cool for a minimum of 3 hours.\u003c\/li\u003e\n\u003cli\u003eDo not move the furnace until it has cooled completely. Allow approximately 3–5 hours for cooling.\u003c\/li\u003e\n\u003cli\u003eDo not place a hot graphite crucible directly onto a cold metal surface, as rapid cooling can cause cracking.\u003c\/li\u003e\n\u003cli\u003eCracks may develop in the inner ceramic chamber due to normal temperature fluctuations and do not necessarily affect operation.\u003c\/li\u003e\n\u003cli\u003eTypical heating and melting time is approximately 48–60 minutes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e GF1100ND3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrucible Capacity:\u003c\/strong\u003e 3kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Heating Temperature:\u003c\/strong\u003e 1150°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Input:\u003c\/strong\u003e 1750W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e 220V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Range Measurement Accuracy:\u003c\/strong\u003e 1°\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrucible Internal Dimensions:\u003c\/strong\u003e 5 x 16cm (diameter x height)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrucible External Dimensions:\u003c\/strong\u003e 7.5 x 17cm (diameter x height)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 38 x 24 x 21cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 9.9kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Melting Furnace\u003c\/li\u003e\n\u003cli\u003e1 x 3kg Graphite Crucible\u003c\/li\u003e\n\u003cli\u003e1 x Pouring Vessel\u003c\/li\u003e\n\u003cli\u003e1 x Crucible Tong\u003c\/li\u003e\n\u003cli\u003e1 x Anti-Scalding Gloves\u003c\/li\u003e\n\u003cli\u003e1 x Power Cable\u003c\/li\u003e\n\u003cli\u003e1 x Product Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Video\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"640\" src=\"https:\/\/www.youtube.com\/embed\/PQE2Yb772lk\" height=\"360\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"HobbiesForAll.shop","offers":[{"title":"Black","offer_id":45251289841822,"sku":"FURNACEBLACKDEMO","price":3395.0,"currency_code":"ZAR","in_stock":false},{"title":"Red","offer_id":45251289874590,"sku":"FURNACEREDDEMO","price":3395.0,"currency_code":"ZAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/4581\/2382\/files\/blackfurnace_50d61acd-f822-4204-be63-ab51473a4b56.png?v=1756294766","url":"https:\/\/hobbiesforall.co.za\/products\/3kg-electric-melting-furnace-to-melt-gold-silver-and-copper-demo-unit","provider":"HobbiesForAll.shop","version":"1.0","type":"link"}