{"product_id":"lampaugerbit38","title":"Lamp Auger Bit","description":"\u003cbody\u003e\n \n  \u003cp\u003e\n   \u003cb\u003e\n    Lamp Auger Bit\n   \u003c\/b\u003e\n  \u003c\/p\u003e\n  \u003cp\u003e\n   A Lamp Auger (or shell auger) is a long thin auger bit with a handle that is used for manual drilling on the lathe. The classic use for this auger is boring holes in turned lamp columns, but any spindle that needs a centered longitudinal hole is fair game.  Assuming your lathe has a hollow tailstock (or headstock) and you're holding the workpiece with a hollow center, you with a slow rotating speed, insert the auger and gradually bore a hole to the depth you need.  Drill in small increments, pulling back often to evacuate the chips. The cutting edge is designed specifically for working in end grain, and is easily re-sharpenened.\n  \u003c\/p\u003e\n  \u003ch5\u003e\n   Specifications\n  \u003c\/h5\u003e\n  \u003cul style=\"margin-top:-3px;\"\u003e\n   \u003cli\u003e\n    Hole Diameter — 8mm (5\/16\") or 9.2mm (3\/8\") (select size above)\n   \u003c\/li\u003e\n   \u003cli\u003e\n    Auger Length — 600mm (24\")\n    \u003cbr\u003e\n    \u003cspan style=\"font-size:.8em;\"\u003e\n     (This is the length listed on Crown's website and in their catalog.\n     \u003cbr\u003e\n     This is the length of the steel, not the cutting length.)\n    \u003c\/span\u003e\n   \u003c\/li\u003e\n   \u003cli\u003e\n    Handle Length — 216mm (8-1\/2\")\n   \u003c\/li\u003e\n   \u003cli\u003e\n    Overall Length with Handle — 29\"\n   \u003c\/li\u003e\n   \u003cli\u003e\n    Exposed Shaft Length — 20\"\n   \u003c\/li\u003e\n   \u003cli\u003e\n    Maximum Drilling Length — This depends on your lathe. Subtract the headstock spindle length or tailstock spindle length from the Exposed Shaft Length listed above.\n   \u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp style=\"font-size:.9em; font-style:italic;\"\u003e\n   Metric measurements are precise manufacturer's specifications. Inch measurements are approximate.\n  \u003c\/p\u003e\n  \u003cp\u003e\n   \u003cstrong\u003e\n    Important Notes:\n   \u003c\/strong\u003e\n  \u003c\/p\u003e\n  \u003cul\u003e\n   \u003cli\u003e\n    You must have a hollow headstock or tailstock of sufficient diameter to drill.\n   \u003c\/li\u003e\n   \u003cul\u003e\n    \u003cli\u003e\n     Many lathes have a hollow tailstock. If you use a knockout bar to remove your tailstock center, you're probably OK.\n    \u003c\/li\u003e\n    \u003cli\u003e\n     The headstock or tailstock you'll be drilling through must be #2 or #3 Morse Taper. (#1 Morse Taper is not large enough to accept either of these augers.)\n    \u003c\/li\u003e\n    \u003cli\u003e\n     Check the diameter of the hollow bore.  Most turners will need the 5\/16\" lamp auger. Very few lathes will accept 3\/8\".\n    \u003c\/li\u003e\n   \u003c\/ul\u003e\n   \u003cbr\u003e\n   \u003cli\u003e\n    You will need a hollow center of the correct diameter for the bit to go through.\n   \u003c\/li\u003e\n   \u003cul\u003e\n    \u003cli\u003e\n     For drilling through the tailstock, we recommend the\n     \u003ca data-prev-url=\"\/onewaylivecenter2mt.aspx\" href=\"\/products\/onewaylivecenter2mt\"\u003e\n      Oneway Live Center\n     \u003c\/a\u003e\n     (5\/16\") or\n     \u003ca data-prev-url=\"\/oneway-hollow-safe-driver.aspx\" href=\"\/products\/oneway-hollow-safe-driver\"\u003e\n      Oneway Hollow Safe Driver\n     \u003c\/a\u003e\n     (5\/16\" or 3\/8\").\n    \u003c\/li\u003e\n    \u003cli\u003e\n     For drilling through the headstock, we recommend the\n     \u003ca data-prev-url=\"\/oneway-hollow-safe-driver.aspx\" href=\"\/products\/oneway-hollow-safe-driver\"\u003e\n      Oneway Hollow Safe Driver\n     \u003c\/a\u003e\n     (5\/16\" or 3\/8\")\n    \u003c\/li\u003e\n   \u003c\/ul\u003e\n   \u003cbr\u003e\n   \u003cli\u003e\n    These lamp augers only cut when presented to wood that's turning counter-clockwise.\n    \u003cul\u003e\n     \u003cli\u003e\n      Drilling through the headstock of a lathe requires a reversible motor.\n     \u003c\/li\u003e\n     \u003cli\u003e\n      Drilling through the tailstock does not require a reversible motor.\n     \u003c\/li\u003e\n    \u003c\/ul\u003e\n   \u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003c!--\u003ca name=\"moreinfo\"\u003e\u003c\/a\u003e \u003ch3 style=\"background:#D6CBB5; padding:2px 4px; font-size:13.33px;\"\u003eAdditional Information\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"\/library\/manuals\/sorby\/Use-and-Care-of-the-Lamp-Standard-Shell-Auger.pdf\"\u003eUse and Care of the Lamp Standard Shell Auger\u003c\/a\u003e PDF.\u003c\/p\u003e\u003cblockquote class=\"sorbylamp\" cite=\"http:\/\/www.robert-sorby.co.uk\/tips.htm#uclsa\"\u003e\u003cp class=\"top\"\u003eUse and Care of the Lamp Standard Shell Auger\u003c\/p\u003e\u003cp\u003eUnlike regular auger bits which have a screw nose which pulls itself through the wood, Lamp Standard Shell Augers have  a lip and flat cutting face to ensure that they cut straight and true. As a result it has to be pushed into the wood by the turner. The curve of the lip ensures that the auger runs centrally and is unaffected by either the grain or texture of the wood being turned. The leading edge of the shell serves to start the hole and is relieved on the outside to prevent binding. The form of the nose then allows the Augur to cut into the wood under steady pressure.\u003c\/p\u003e\u003cp\u003eGreat care should be taken when using a Lamp Standard Shell Auger. It is particularly important to avoid running the Auger through the wood and into the drive centre. You should avoid potential damage to the nose by preventing contact between the Auger and the long hole boring attachment in the tailstock.\u003c\/p\u003e\u003cp\u003eYou should frequently withdraw the Auger and remove waste wood. Failure to do so will lead to a build-up of wood in the hole which prevents the Auger from cutting and causes the wood to burn. This may in turn lead to drawing the temper in the nose of the Auger thereby causing permanent damage.\u003c\/p\u003e\u003cp\u003eSharpening of the Auger should be carried out with a degree of care to avoid removing too much metal from the nose. You only have a small amount of material to work with. Therefore you should never sharpen your Auger on a bench grinder.\u003c\/p\u003e\u003cp\u003eWith the Auger held vertically, use a flat diamond hone on the bevel of the nose. A few  strokes should suffice. For the inside of the flute use a suitable slip stone or diamond hone. When sharpening move the slipstone to the left so that the leading edge is honed. Do not try to sharpen the outside of the Augur as clearance may be lost causing the Auger to bind in your wood.\u003c\/p\u003e\u003cp\u003eInstructions courtesy of \u003ca href=\"http:\/\/www.robert-sorby.co.uk\"\u003eRobert Sorby Ltd.\u003c\/a\u003e\u003c\/p\u003e\u003c\/blockquote\u003e--\u003e\n \n\u003c\/body\u003e","brand":"Crown Hand Tools","offers":[{"title":"5\/16 inch","offer_id":50821649367322,"sku":"143443","price":155.5,"currency_code":"USD","in_stock":true},{"title":"3\/8 inch","offer_id":50821649400090,"sku":"143444","price":153.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0904\/5167\/3370\/files\/141910.jpg?v=1751678514","url":"https:\/\/www.highlandwoodworking.com\/products\/lampaugerbit38","provider":"Highland Woodworking","version":"1.0","type":"link"}