{"product_id":"ancient-bronze-casting-grain","title":"Ancient Bronze Casting Grain","description":"\u003cp\u003eGet clean, durable casts with this zinc-free, true bronze casting grain. It delivers a deep ancient bronze color with rich red undertones and takes patina beautifully.\n\nSold by the pound. \n\nApplications \nAny casting method.\n\nCasting and Cleaning \nIn general, your casting temperature should be 100˚F (37.7˚C) above the liquidus point (somewhat hotter if the castings are intricate). Use a small amount of high-quality flux when melting with an open flame. We recommend Matt’s Casting Flux™. For further cleaning, mechanical means are recommended. \n\nRe-Using \nIf you plan to re-use ancient bronze castings, remove the copper oxides from the surface in a pickling solution or by mechanical means. We recommend a minimum 1:1 ratio of new grain to used bronze. All re-used bronze should be clean and free of debris. \n\nComposition \nAll ingredients are kept in an oxygen-reduced atmosphere during the melting and pouring process to ensure optimum deoxidation.\n\nThe grain is composed of 90% copper with some tin; it fits into the CDA#90700 category.\u003c\/p\u003e","brand":"Rio Grande","offers":[{"title":"Default Title","offer_id":52645122081114,"sku":"706051","price":32.87,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0934\/7897\/7882\/files\/706051.jpg?v=1762290568","url":"https:\/\/www.amadesa.com\/es-es\/products\/ancient-bronze-casting-grain","provider":"Amadesa","version":"1.0","type":"link"}