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The down shear carbide spiral bit is far more popular because many router tables have less than efficient, vacuum hold-down which makes the up-shear bit want to lift the panel with it’s upward cutting motion.  This results in unacceptable vibration and movement of the panel.\u003c\/p\u003e","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520822116421,"sku":"12DS21.53.5FEM","price":104.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/14DSFEM_20-_20Copy_20_5.jpg?v=1554298791"},{"product_id":"downshear129","title":"1\/2 Diameter 2 Flute 1-5\/8\" Cut Length 3-1\/2\" Overall Length 1\/2\" Shank Plunge End","description":"\u003cp\u003eThe down shear bit leaves a very crisp edge but is less effective with chip evacuation, which can lead to excessive friction and tool wear if not run correctly. Down shear bits are a good choice for cutting shallow grooves or dados with visible edges. One other note – down shear bits are generally run slower than up cut bits due to the chip evacuation speed. This is another reason for cutting shallow grooves in multiple passes vs going deep on one pass. The slower feed speed allows the bit more time to evacuate chips which will help avoid excessive tool stress or friction. The down shear carbide spiral bit is far more popular because many router tables have less than efficient, vacuum hold-down which makes the up-shear bit want to lift the panel with it’s upward cutting motion.  This results in unacceptable vibration and movement of the panel.\u003c\/p\u003e","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520822181957,"sku":"12DS21.6253.5","price":104.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/12DS1_20-_20Copy_20_14.jpg?v=1554298793"},{"product_id":"downshear130","title":"1\/2 Diameter 2 Flute 1-5\/8\" Cut Length 3-1\/2\" Overall Length 1\/2\" Shank Fem End","description":"\u003cp\u003eThe down shear bit leaves a very crisp edge but is less effective with chip evacuation, which can lead to excessive friction and tool wear if not run correctly. Down shear bits are a good choice for cutting shallow grooves or dados with visible edges. One other note – down shear bits are generally run slower than up cut bits due to the chip evacuation speed. This is another reason for cutting shallow grooves in multiple passes vs going deep on one pass. The slower feed speed allows the bit more time to evacuate chips which will help avoid excessive tool stress or friction. The down shear carbide spiral bit is far more popular because many router tables have less than efficient, vacuum hold-down which makes the up-shear bit want to lift the panel with it’s upward cutting motion.  This results in unacceptable vibration and movement of the panel.\u003c\/p\u003e","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520822214725,"sku":"12DS21.6253.5FEM","price":104.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/14DSFEM_20-_20Copy_20_6.jpg?v=1554298794"},{"product_id":"downshear131","title":"1\/2 Diameter 2 Flute 1-3\/4\" Cut Length 4\" Overall Length 1\/2\" Shank Plunge End","description":"\u003cp\u003eThe down shear bit leaves a very crisp edge but is less effective with chip evacuation, which can lead to excessive friction and tool wear if not run correctly. Down shear bits are a good choice for cutting shallow grooves or dados with visible edges. One other note – down shear bits are generally run slower than up cut bits due to the chip evacuation speed. This is another reason for cutting shallow grooves in multiple passes vs going deep on one pass. The slower feed speed allows the bit more time to evacuate chips which will help avoid excessive tool stress or friction. The down shear carbide spiral bit is far more popular because many router tables have less than efficient, vacuum hold-down which makes the up-shear bit want to lift the panel with it’s upward cutting motion.  This results in unacceptable vibration and movement of the panel.\u003c\/p\u003e","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520822247493,"sku":"12DS21.754","price":109.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/12DS1_20-_20Copy_20_15.jpg?v=1554298796"},{"product_id":"downshear132","title":"1\/2 Diameter 2 Flute 1-3\/4\" Cut Length 4\" Overall Length 1\/2\" Shank Fem End","description":"\u003cp\u003eThe down shear bit leaves a very crisp edge but is less effective with chip evacuation, which can lead to excessive friction and tool wear if not run correctly. Down shear bits are a good choice for cutting shallow grooves or dados with visible edges. One other note – down shear bits are generally run slower than up cut bits due to the chip evacuation speed. This is another reason for cutting shallow grooves in multiple passes vs going deep on one pass. The slower feed speed allows the bit more time to evacuate chips which will help avoid excessive tool stress or friction. The down shear carbide spiral bit is far more popular because many router tables have less than efficient, vacuum hold-down which makes the up-shear bit want to lift the panel with it’s upward cutting motion.  This results in unacceptable vibration and movement of the panel.\u003c\/p\u003e","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520822280261,"sku":"12DS21.754FEM","price":114.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/14DSFEM_20-_20Copy_20_8.jpg?v=1554298798"},{"product_id":"downshear133","title":"1\/2 Diameter 2 Flute 2\" Cut Length 4\" Overall Length 1\/2\" Shank Plunge End","description":"\u003cp\u003eThe down shear bit leaves a very crisp edge but is less effective with chip evacuation, which can lead to excessive friction and tool wear if not run correctly. Down shear bits are a good choice for cutting shallow grooves or dados with visible edges. One other note – down shear bits are generally run slower than up cut bits due to the chip evacuation speed. This is another reason for cutting shallow grooves in multiple passes vs going deep on one pass. The slower feed speed allows the bit more time to evacuate chips which will help avoid excessive tool stress or friction. The down shear carbide spiral bit is far more popular because many router tables have less than efficient, vacuum hold-down which makes the up-shear bit want to lift the panel with it’s upward cutting motion.  This results in unacceptable vibration and movement of the panel.\u003c\/p\u003e","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520822640709,"sku":"12DS22.04","price":114.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/12DS1_20-_20Copy_20_16.jpg?v=1554298800"},{"product_id":"downshear134","title":"1\/2 Diameter 2 Flute 2\" Cut Length 4\" Overall Length 1\/2\" Shank Fem End","description":"\u003cp\u003eThe down shear bit leaves a very crisp edge but is less effective with chip evacuation, which can lead to excessive friction and tool wear if not run correctly. Down shear bits are a good choice for cutting shallow grooves or dados with visible edges. One other note – down shear bits are generally run slower than up cut bits due to the chip evacuation speed. This is another reason for cutting shallow grooves in multiple passes vs going deep on one pass. The slower feed speed allows the bit more time to evacuate chips which will help avoid excessive tool stress or friction. The down shear carbide spiral bit is far more popular because many router tables have less than efficient, vacuum hold-down which makes the up-shear bit want to lift the panel with it’s upward cutting motion.  This results in unacceptable vibration and movement of the panel.\u003c\/p\u003e","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520822673477,"sku":"12DS22.04FEM","price":119.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/14DSFEM_20-_20Copy_20_7.jpg?v=1554298801"},{"product_id":"downshear135","title":"1\/2 Diameter 2 Flute 2-1\/8\" Cut Length 4\" Overall Length 1\/2\" Shank Plunge End","description":"\u003cp\u003eThe down shear bit leaves a very crisp edge but is less effective with chip evacuation, which can lead to excessive friction and tool wear if not run correctly. Down shear bits are a good choice for cutting shallow grooves or dados with visible edges. One other note – down shear bits are generally run slower than up cut bits due to the chip evacuation speed. This is another reason for cutting shallow grooves in multiple passes vs going deep on one pass. The slower feed speed allows the bit more time to evacuate chips which will help avoid excessive tool stress or friction. The down shear carbide spiral bit is far more popular because many router tables have less than efficient, vacuum hold-down which makes the up-shear bit want to lift the panel with it’s upward cutting motion.  This results in unacceptable vibration and movement of the panel.\u003c\/p\u003e","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520822706245,"sku":"12DS22.1254","price":114.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/12DS1_20-_20Copy_20_17.jpg?v=1554298802"},{"product_id":"downshear136","title":"1\/2 Diameter 2 Flute 2-1\/8\" Cut Length 4\" Overall Length 1\/2\" Shank Fem End","description":"\u003cp\u003eThe down shear bit leaves a very crisp edge but is less effective with chip evacuation, which can lead to excessive friction and tool wear if not run correctly. Down shear bits are a good choice for cutting shallow grooves or dados with visible edges. One other note – down shear bits are generally run slower than up cut bits due to the chip evacuation speed. This is another reason for cutting shallow grooves in multiple passes vs going deep on one pass. The slower feed speed allows the bit more time to evacuate chips which will help avoid excessive tool stress or friction. The down shear carbide spiral bit is far more popular because many router tables have less than efficient, vacuum hold-down which makes the up-shear bit want to lift the panel with it’s upward cutting motion.  This results in unacceptable vibration and movement of the panel.\u003c\/p\u003e","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520822739013,"sku":"12DS22.1254FEM","price":119.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/14DSFEM_20-_20Copy_20_9.jpg?v=1554298804"},{"product_id":"downshear137","title":"1\/2 Diameter 2 Flute 2-1\/4\" Cut Length 4\" Overall Length 1\/2\" Shank Plunge End","description":"\u003cp\u003eThe down shear bit leaves a very crisp edge but is less effective with chip evacuation, which can lead to excessive friction and tool wear if not run correctly. Down shear bits are a good choice for cutting shallow grooves or dados with visible edges. One other note – down shear bits are generally run slower than up cut bits due to the chip evacuation speed. This is another reason for cutting shallow grooves in multiple passes vs going deep on one pass. The slower feed speed allows the bit more time to evacuate chips which will help avoid excessive tool stress or friction. The down shear carbide spiral bit is far more popular because many router tables have less than efficient, vacuum hold-down which makes the up-shear bit want to lift the panel with it’s upward cutting motion.  This results in unacceptable vibration and movement of the panel.\u003c\/p\u003e","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520822771781,"sku":"12DS22.254","price":114.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/12DS1_20-_20Copy_20_18.jpg?v=1554298805"},{"product_id":"downshear138","title":"1\/2 Diameter 2 Flute 2-1\/4\" Cut Length 4\" Overall Length 1\/2\" Shank Fem End","description":"\u003cp\u003eThe down shear bit leaves a very crisp edge but is less effective with chip evacuation, which can lead to excessive friction and tool wear if not run correctly. Down shear bits are a good choice for cutting shallow grooves or dados with visible edges. One other note – down shear bits are generally run slower than up cut bits due to the chip evacuation speed. This is another reason for cutting shallow grooves in multiple passes vs going deep on one pass. The slower feed speed allows the bit more time to evacuate chips which will help avoid excessive tool stress or friction. The down shear carbide spiral bit is far more popular because many router tables have less than efficient, vacuum hold-down which makes the up-shear bit want to lift the panel with it’s upward cutting motion.  This results in unacceptable vibration and movement of the panel.\u003c\/p\u003e","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520822870085,"sku":"12DS22.254FEM","price":124.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/12DSFEM.jpg?v=1554298808"},{"product_id":"downshear1411","title":"1\/4 Diameter 2 Flute 1\" Cut 2-1\/2 Length Fem End","description":"","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520822902853,"sku":"14DS21.02.5FEM","price":39.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/14DS21.02.5FEM_20-_20Copy_20_7.jpg?v=1554298809"},{"product_id":"downshear143","title":"1\/4\" Diameter 2 Flute 1\" Cut Length 3\" Overall Length 1\/4\" Shank Fem End","description":"","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520822968389,"sku":"14DS21.03FEM","price":39.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/14DS21.02.5FEM.jpg?v=1554298812"},{"product_id":"downshear144","title":"1\/4\" Diameter 2 Flute 1-1\/8\" Cut Length 3\" Overall Length 1\/4\" Shank Plunge End","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 1\/4\" Diameter 2 Flute Router Bit is engineered for precision CNC routing, contour machining, and general-purpose cutting applications requiring clean, controlled performance. Featuring a 1-1\/8\" cut length, 3\" overall length, and 1\/4\" shank, this solid carbide router bit delivers smooth cutting action, stable tool engagement, and consistent edge quality across wood, MDF, plywood, plastics, acrylics, and composite materials. The 2-flute geometry provides balanced cutting performance with efficient chip evacuation for improved surface finish and machining stability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eBuilt with a plunge end for efficient vertical entry cutting, this carbide router bit is ideal for slotting, grooving, pocketing, trimming, and detailed CNC routing operations. Precision-ground cutting edges ensure long tool life, reduced vibration, and reliable performance in demanding production environments. Trusted by machinists, cabinet makers, sign shops, and CNC professionals, Centurion Tools LLC cutting tools are proudly Made in the USA for durable, high-performance machining results.\u003c\/span\u003e\u003c\/p\u003e","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520823001157,"sku":"14DS21.1253","price":44.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/14ds.jpg?v=1554298813"},{"product_id":"downshear145","title":"1\/4\" Dia. 2 Flute 1-1\/8\" Cut Length 3\" Overall Length 1\/4\" Shank Fem End","description":"","brand":"Centurion Tools","offers":[{"title":"Default Title","offer_id":19520823033925,"sku":"14DS21.1253FEM","price":44.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/products\/14DSFEM.jpg?v=1554298816"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/5932\/1669\/collections\/12DS1_c4529d8b-fb25-4cc1-b95e-d9fe4aed86a6.jpg?v=1780313939","url":"https:\/\/www.centuriontools.com\/collections\/downshear-bits.oembed?page=11","provider":"Centurion Tools LLC","version":"1.0","type":"link"}