{"product_id":"niqua-79-tool-steel-burs-egg","title":"Niqua® 79 Tool Steel Burs Egg","description":"\u003cp data-path-to-node=\"1\"\u003eShape convex and concave curvatures, blend complex sculptural contours, and mill broad stone seating cavities with chatter-free rotary control. Manufactured to strict Swiss-Made precision standards for NIQUA, the NIQUA® SUPER Q® Egg-Shaped Bur \"79\" (Eifräser \/ Ovoid Bur) is an industrial-grade rotary shaping cutter engineered for professional goldsmiths, gemstone setters, and fine jewelry model makers.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003eFeaturing an ovoid profile that tapers gracefully from a rounded broad base toward a narrower domed apex, the Series 79 bur bridges the gap between round (spherical) burs and elongated flame cutters. This compound egg geometry gives artisans multi-radius cutting capability: the tighter apex radius accesses tighter transitional corners and deep setting hollows, while the broad, sweeping side radius smooths and levels compound curvatures without digging harsh grooves. Forged from premium hardened tool steel, each bur delivers clean chip evacuation and dependable edge retention in soft, ductile alloys including yellow gold, sterling silver, copper, brass, and related non-ferrous metals. Fitted with an industry-standard 2.35 mm (3\/32\") shank, these large egg burs mount directly into jeweler flexible shaft handpieces, heavy-duty bench micromotors, and quick-change chuck systems. Available in substantial finishing diameters of 6.00 mm and 8.00 mm (Art.-No. 03 247 060 and 03 247 080), each size is packaged in a bench storage box containing 6 pieces.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"4\"\u003eWhy Choose NIQUA® SUPER Q® 79 Egg-Shaped Burs\u003c\/h3\u003e\n\u003cul data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003eDistinctive Ovoid (Egg-Shaped) Geometry:\u003c\/b\u003e\u003cspan\u003e Blends a broad lower belly with a tapered domed nose,\u003c\/span\u003e\u003cspan\u003e allowing artisans to transition seamlessly between narrow recesses and broad contour sweeps with one tool.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003eFacet-Free Surface Smoothing:\u003c\/b\u003e\u003cspan\u003e The progressive curvature prevents the creation of flat spots and harsh transitional ridges,\u003c\/span\u003e\u003cspan\u003e ensuring smooth,\u003c\/span\u003e\u003cspan\u003e flowing contours on cast mountings.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003eDeep Swarf Evacuation Flutes:\u003c\/b\u003e\u003cspan\u003e Precision-milled fluting quickly lifts and expels ductile shavings,\u003c\/span\u003e\u003cspan\u003e preventing chip packing,\u003c\/span\u003e\u003cspan\u003e surface galling,\u003c\/span\u003e\u003cspan\u003e and tool loading in soft precious metals.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003e\u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"0\"\u003eLow-Vibration Concentric Operation:\u003c\/b\u003e\u003cspan\u003e Precision-ground Swiss tool steel core minimizes radial runout,\u003c\/span\u003e\u003cspan\u003e ensuring steady handpiece tracking and smooth cuts.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,4,0\"\u003e\u003cb data-path-to-node=\"5,4,0\" data-index-in-node=\"0\"\u003eHardened Swiss-Quality Tool Steel:\u003c\/b\u003e\u003cspan\u003e Provides wear resistance,\u003c\/span\u003e\u003cspan\u003e edge sharpness,\u003c\/span\u003e\u003cspan\u003e and extended service life across continuous workshop use.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,5,0\"\u003e\u003cb data-path-to-node=\"5,5,0\" data-index-in-node=\"0\"\u003eUniversal 2.35 mm (3\/32\") Shank:\u003c\/b\u003e\u003cspan\u003e Provides seamless compatibility across standard flexible shaft systems,\u003c\/span\u003e\u003cspan\u003e quick-change handpieces,\u003c\/span\u003e\u003cspan\u003e and laboratory micromotors without collet adapters.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NIQUA","offers":[{"title":"6.00 mm","offer_id":67993383436388,"sku":"03-247-060","price":44.34,"currency_code":"USD","in_stock":true},{"title":"8.00 mm","offer_id":67993383469156,"sku":"03-247-080","price":49.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/2902\/9732\/files\/niqua-super-q-79-egg-shaped-bur-macro.jpg?v=1793869825","url":"https:\/\/luxgoldtools.com\/products\/niqua-79-tool-steel-burs-egg","provider":"LUXGOLDTOOLS","version":"1.0","type":"link"}