{"product_id":"borax-casting-flux-powder-1lb","title":"Borax Flux-1Lb","description":"\u003cp\u003e\u003cstrong\u003eBorax casting flux powder\u003c\/strong\u003e controls oxidation while you melt and pour at the bench, keeping metal cleaner for better fills and fewer inclusions. Use it as a general casting flux or for crucible prep across melting and pouring ingots, general casting operations, and crucible preparation and maintenance. Sold as a powder in a \u003cstrong\u003eone-pound (1 lb)\u003c\/strong\u003e box.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eControls oxidation during melting and casting\u003c\/li\u003e\n\u003cli\u003eKeeps melts cleaner and helps reduce slag and inclusions\u003c\/li\u003e\n\u003cli\u003eSuitable for crucible prep, used alone or mixed with boric acid\u003c\/li\u003e\n\u003cli\u003eEasy to sprinkle or spoon into the melt\u003c\/li\u003e\n\u003cli\u003ePowder form, sold in a 1 lb (0.45 kg) box\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eHow to use:\u003c\/strong\u003e\u003c\/p\u003e\u003col\u003e\n\u003cli\u003eSprinkle a small amount of borax into the crucible before charging metal to help glaze and protect the surface.\u003c\/li\u003e\n\u003cli\u003eAdd a pinch to the melt as needed to maintain a clean, glassy cover while heating.\u003c\/li\u003e\n\u003cli\u003eFor crucible conditioning, coat the hot crucible interior with a light layer of borax and rotate to distribute.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003e\u003cstrong\u003eBorax vs. boric acid:\u003c\/strong\u003e They are two different formulations related to boron chemistry. Borax is a naturally occurring mineral used here as a casting flux, and boric acid is a refined derivative. Both can be used during melting to help clean metal, and they may be mixed for certain shop practices, including crucible prep.\u003c\/p\u003e\u003cp\u003eUse appropriate PPE, including gloves, eye protection, and fume management, when melting and pouring. Avoid inhalation of dust and keep the container closed when not in use. Follow your foundry and crucible manufacturer's recommendations.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43579615838422,"sku":"122.821","price":6.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/borax-flux-1lb-otto-frei.jpg?v=1719958555","url":"https:\/\/www.ottofrei.com\/ja\/products\/borax-casting-flux-powder-1lb","provider":"Otto Frei","version":"1.0","type":"link"}