{"product_id":"nrs-25-outer-bowl","title":"NRS 2.5\" Outer Bowl Left (Body and Blade Options)","description":"\u003ch2\u003eNRS 2.5\" Outer Bowl Left\/Right\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003ePatent Pending — 3rd generation advanced design.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe 2.5\" Outer Bowl NRS is specifically shaped for refining the exterior surfaces of bowls, available in left or right orientation. Its profile is designed to follow the outside curve of bowls, making it the go-to tool for removing tool marks and achieving a smooth exterior surface before sanding.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePrecision-machined 3\/8\" thick heat-treated hardened stainless steel body\u003c\/li\u003e\n\u003cli\u003eReplaceable 10V steel blades with exceptional edge and burr retention\u003c\/li\u003e\n\u003cli\u003e15V blade option for even longer burr life\u003c\/li\u003e\n\u003cli\u003e3rd-generation advanced design for enhanced stability\u003c\/li\u003e\n\u003cli\u003eTaper lock bolster for fast handle removal and easier sharpening\u003c\/li\u003e\n\u003cli\u003eShipped sharpened and ready to use\u003c\/li\u003e\n\u003cli\u003eErgonomic and vibration-free in use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003eNegative Rake Scraping is a technique pioneered by Stuart Batty in the 1990s. Unlike conventional scraping, it uses a blade with both a top and bottom bevel (like a skew) to create controlled abrasion rather than an aggressive cut. The blade edge is positioned at center height with the tool handle parallel to the floor — it does not require pointing downhill like a conventional scraper.\u003c\/p\u003e\n\u003cp\u003eThe technique relies entirely on a burr formed by grinding the lower bevel against a wheel or belt. The 20-degree negative rake top angle is pre-ground on each blade; you grind only the lower bevel to create the burr. You can set the grinding angle at 20, 22.5, 25, 30, 35, or 40 degrees using angle gauges. Lower angles produce a larger burr. Once the burr wears down, the blade must be resharpened to recreate it.\u003c\/p\u003e\n\u003cp\u003eUnlike conventional and carbide scrapers, which must be kept narrow to reduce aggression, the NRS is never aggressive regardless of how much edge contacts the wood. This makes it highly effective for removing tool marks, uneven surfaces, and torn grain. It works best on medium to very dense woods; very soft or spalted woods may not respond as well.\u003c\/p\u003e\n\n\u003ch3\u003eBurr \u0026amp; Grit Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e80 Grit:\u003c\/strong\u003e Very large burr, approximately 100 regrinds per blade (longest burr life)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e120 Grit:\u003c\/strong\u003e Large burr, approximately 150 regrinds per blade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e180 Grit:\u003c\/strong\u003e Medium burr, approximately 200 regrinds per blade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e220 Grit:\u003c\/strong\u003e Medium burr, approximately 240 regrinds per blade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e320 Grit:\u003c\/strong\u003e Fine burr, approximately 350 regrinds per blade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e600 Grit:\u003c\/strong\u003e Very fine burr, approximately 600 regrinds per blade (shortest burr life)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eMaterials \u0026amp; Construction\u003c\/h3\u003e\n\u003cp\u003eThe NRS body is precision-machined from 3\/8\" thick heat-treated hardened stainless steel. Blades are available in CPM 10V steel, which holds an edge\/burr up to 350% longer than M42, and CPM 15V steel, which holds an edge\/burr up to 50% longer than 10V. Each blade is supplied with a pre-ground 20-degree negative rake top angle and can be resharpened numerous times before replacement is needed. The tool includes a stainless steel taper lock bolster for secure mounting in the handle system.\u003c\/p\u003e","brand":"SB Tools","offers":[{"title":"Left Body with 10V Blade","offer_id":48886185951456,"sku":"NRS-OUTERBWL-2-5-LFT-BDY","price":279.9,"currency_code":"USD","in_stock":true},{"title":"Left 10V Blade Only","offer_id":48886185984224,"sku":"NRS-OUTERBWL-2-5-LFT-10V","price":74.9,"currency_code":"USD","in_stock":false},{"title":"Left Body with 15V Blade","offer_id":48886186016992,"sku":"NRS-OUTERBWL-2-5-LFT-BDY1","price":299.9,"currency_code":"USD","in_stock":false},{"title":"Left 15V Blade Only","offer_id":48886186049760,"sku":"NRS-OUTERBWL-2-5-LFT-15V","price":99.9,"currency_code":"USD","in_stock":false},{"title":"Left Body Only","offer_id":52117272199392,"sku":null,"price":205.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0763\/2918\/9600\/files\/NRS-OUTERBWL-2-5_1.jpg?v=1773022455","url":"https:\/\/stuartbattytools.com\/products\/nrs-25-outer-bowl","provider":"SB Tools","version":"1.0","type":"link"}