{"product_id":"boric-acid-powder-casting-flux-1lb","title":"Boric Acid Powder-1Lb","description":"\u003cp\u003e\u003cstrong\u003eBoric acid powder, technical grade,\u003c\/strong\u003e works as a casting flux and deoxidizing agent that keeps metal clean while you melt and pour at the bench. Use it as a general casting powder and flux or for crucible preparation and maintenance. Packaged 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\u003eHelps produce cleaner pours with fewer inclusions\u003c\/li\u003e\n\u003cli\u003eUse alone or mix with borax for tailored flux behavior\u003c\/li\u003e\n\u003cli\u003eSuitable for crucible prep and maintenance\u003c\/li\u003e\n\u003cli\u003eTechnical grade powder, 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 into the crucible or onto the melt to create a protective layer.\u003c\/li\u003e\n\u003cli\u003eFor crucible conditioning, warm the crucible and rotate it to coat the interior surfaces.\u003c\/li\u003e\n\u003cli\u003eBlend with borax as needed to adjust flow, wetting, and oxidation control.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003e\u003cstrong\u003eBorax vs. boric acid:\u003c\/strong\u003e Both are related boron compounds used in melting and crucible preparation. Borax is a naturally occurring mineral, and boric acid is a refined derivative. Each can be used alone as flux, or the two can be mixed together to combine benefits for melting and crucible prep.\u003c\/p\u003e\u003cp\u003eUse appropriate PPE, including gloves and eye protection. Avoid inhaling dust and keep the container closed when not in use. Follow foundry and crucible manufacturer recommendations for safe handling.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43579615903958,"sku":"154.447","price":7.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/boric-acid-powder-1lb-otto-frei.jpg?v=1719958555","url":"https:\/\/www.ottofrei.com\/ja\/products\/boric-acid-powder-casting-flux-1lb","provider":"Otto Frei","version":"1.0","type":"link"}