{"product_id":"endmill-onsrud-52-360bl","title":"LMT Onsrud 52-360BL 1\/2\" Solid Carbide 2-Flute Upcut Ball Nose Router Bit – Extended Length, 1-1\/2\" Cut, 1\/2\" Shank, 5\" OAL","description":"\u003cp\u003eThe LMT Onsrud 52-360BL is the extended-length version of Onsrud's 1\/2\" solid carbide two-flute upcut ball nose. With a 1-1\/2\" cutting edge, a 3-5\/8\" neck, and a 5\" overall length, it reaches into deep 3D carvings, mold cavities, signs, and model work that a standard 3\" ball nose cannot touch without the collet nut hitting the part. The ball tip geometry is ground for carving and modeling, leaving a smooth scalloped surface on finishing passes, and the upcut spiral keeps chips clearing out of deep pockets instead of packing in behind the tool.\u003c\/p\u003e\n\u003ch2\u003eLMT Onsrud 52-360BL specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003ctd\u003e52-360BL (LMT Onsrud 52-200BL series, extended length)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCutting diameter\u003c\/th\u003e\n\u003ctd\u003e1\/2\" (0.500\", 12.7 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTip radius\u003c\/th\u003e\n\u003ctd\u003e1\/4\" (full ball)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCut length (LOC)\u003c\/th\u003e\n\u003ctd\u003e1-1\/2\" (1.500\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNeck length\u003c\/th\u003e\n\u003ctd\u003e3-5\/8\" (3.625\") reach below the shank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank diameter\u003c\/th\u003e\n\u003ctd\u003e1\/2\" (0.500\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOverall length\u003c\/th\u003e\n\u003ctd\u003e5\" (5.000\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFlutes\u003c\/th\u003e\n\u003ctd\u003e2, double edge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCut direction\u003c\/th\u003e\n\u003ctd\u003eUpcut spiral\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eSolid carbide, uncoated (bright) finish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of origin\u003c\/th\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e895680008763\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat the 52-360BL is designed to cut\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHardwood and softwood 3D carvings, reliefs, and signage\u003c\/li\u003e\n\u003cli\u003eMDF, plywood, and other wood composites for molds, plugs, and patterns\u003c\/li\u003e\n\u003cli\u003eHard and soft plastics, including HDPE, acrylic, and modeling board\u003c\/li\u003e\n\u003cli\u003eAluminum at light engagement for 3D surfacing\u003c\/li\u003e\n\u003cli\u003eFoam and tooling board where deep reach is needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhen you need the extended-length version\u003c\/h2\u003e\n\u003cp\u003eA standard 1\/2\" ball nose (Onsrud 52-360B) has about 1-1\/8\" of cut and 3\" of overall length. On a deep relief, a bowl, or a mold half, the collet nut arrives at the top surface before the tip reaches the bottom of the cavity. The 52-360BL's 3-5\/8\" neck gives you that extra reach while keeping a full 1\/2\" shank in the collet for rigidity. Run the roughing pass with a flat end mill and leave this tool for the semi-finish and finish passes; its extra length means you should keep stepovers and feeds conservative to avoid chatter.\u003c\/p\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eThe 1\/2\" shank requires a 1\/2\" collet: ER20 (1\/2\" is the largest ER20 size), ER25, ER32, or a 1\/2\" collet on a handheld or table router. It will not fit ER11 or ER16 spindles.\u003c\/p\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat stepover should I use for a smooth finish?\u003c\/strong\u003e\u003cbr\u003eFor a 1\/2\" ball nose, a 10% stepover (0.050\") leaves a scallop height of roughly 0.001\", which sands out easily. An 8% stepover is a common choice for paint-grade signs and molds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this the same as the 52-360B?\u003c\/strong\u003e\u003cbr\u003eNo. The 52-360B is the standard 3\" overall length version with a 1-1\/8\" cut. The 52-360BL adds reach with a longer neck and a 5\" overall length.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it work in a 1\/4\"-collet trim router?\u003c\/strong\u003e\u003cbr\u003eNo. The shank is 1\/2\". Use a router or spindle with a 1\/2\" collet.\u003c\/p\u003e\n\u003cp\u003eGenuine LMT Onsrud tooling, manufactured in Waukegan, Illinois, USA.\u003c\/p\u003e","brand":"LMT Onsrud","offers":[{"title":"Default Title","offer_id":67608515739822,"sku":"52-360BL","price":276.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/52-360bl_1.jpg?v=1790878197","url":"https:\/\/buildyuurcnc.com\/products\/endmill-onsrud-52-360bl","provider":"BuildYourCNC","version":"1.0","type":"link"}