{"title":"Kansai Special Knives \u0026 Cutters","description":"\u003cp\u003eKansai Special upper and lower knives, knife holders and other cutting parts. Order by the Kansai Special part number.\u003c\/p\u003e\n\u003cp\u003eMore \u003ca href=\"\/collections\/kansai-special-spare-parts\"\u003eKansai Special spare parts\u003c\/a\u003e, or \u003ca href=\"\/collections\/spare-parts\"\u003espare parts from all makers\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"kansai-special-05-4290-0-upper-knife","title":"Kansai Special 05-4290-0 Upper Knife","description":"\u003ch2\u003eKansai Special 05-4290-0 Upper Knife\u003c\/h2\u003e\n\u003cp\u003eKansai Special spare part 05-4290-0: Upper Knife. This is one replaceable cutting blade, clamped or screwed into its holder. This part appears in the Kansai Special parts books for FX.\u003c\/p\u003e\n\u003cp\u003eThe cutting pair of an overlock or chainstitch machine wears with every seam it trims. A dull or chipped blade shows first as frayed edges and thread ends left hanging.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e05-4290-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Upper Knife\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 05-429\u003c\/li\u003e\n\u003cli\u003eType: Knives \u0026amp; Cutters\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: FX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eRead the name for the position (upper or lower) and the side (left or right), and watch for a chain cutter, which does a different job from the knives that trim the fabric. Then confirm the part number.\u003c\/p\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThere are chips or nicks along the cutting edge\u003c\/li\u003e\n\u003cli\u003eThe fabric edge frays or is cut unevenly\u003c\/li\u003e\n\u003cli\u003eThe cutting edge looks rounded or shiny instead of sharp\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSwitch the machine off and unplug it before you start. Set the knife pressure and timing as the manual for your machine describes, and turn the handwheel by hand through a full stitch before the first run.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-3760-0-leaf-spring-upper\"\u003eKansai Special 05-3760-0 Leaf Spring (Upper)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-87-1000-0-bolt\"\u003eKansai Special 87-1000-0 Bolt\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-3770-0-leaf-spring-lower\"\u003eKansai Special 05-3770-0 Leaf Spring (Lower)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-3930-0-plate\"\u003eKansai Special 05-3930-0 Plate\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse \u003ca href=\"\/collections\/kansai-special-knives-and-cutters\"\u003eKansai Special knives \u0026amp; cutters\u003c\/a\u003e, or see \u003ca href=\"\/collections\/kansai-special-spare-parts\"\u003eKansai Special spare parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":51105711554725,"sku":"KAN-05-429","price":60.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_knife_v2.png?v=1793912220"},{"product_id":"kansai-special-05-5480-0-lower-knife","title":"Kansai Special 05-5480-0 Lower Knife","description":"\u003ch2\u003eKansai Special 05-5480-0 Lower Knife\u003c\/h2\u003e\n\u003cp\u003ePart 05-5480-0 in the Kansai Special parts list is a lower knife. It is one replaceable cutting blade, clamped or screwed into its holder. This part appears in the Kansai Special parts books for FX.\u003c\/p\u003e\n\u003cp\u003eA knife does not work alone. It is normally set against a partner blade and runs close to the stitch-forming parts, so its edge, height and pressure all show up in the seam.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e05-5480-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Lower Knife\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 05-548\u003c\/li\u003e\n\u003cli\u003eType: Knives \u0026amp; Cutters\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: FX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe fabric edge frays or is cut unevenly\u003c\/li\u003e\n\u003cli\u003eThreads are not cut cleanly or are left hanging\u003c\/li\u003e\n\u003cli\u003eMore knife pressure is needed than before to cut cleanly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSwitch the machine off and unplug it before you start, and handle the knife with care because its edge is very sharp. Clean lint and old thread out of the knife seat so that the new blade sits flat and square.\u003c\/p\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eKnives of similar shape can differ in length, thickness and edge angle, and some are made for particular fabrics. Choose by the full part number, not by how the blade looks.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-3760-0-leaf-spring-upper\"\u003eKansai Special 05-3760-0 Leaf Spring (Upper)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-87-1000-0-bolt\"\u003eKansai Special 87-1000-0 Bolt\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-3770-0-leaf-spring-lower\"\u003eKansai Special 05-3770-0 Leaf Spring (Lower)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-3930-0-plate\"\u003eKansai Special 05-3930-0 Plate\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow tight should the knife pressure be?\u003c\/strong\u003e\u003cbr\u003eOnly as tight as a clean cut needs. Extra pressure heats and wears both blades faster. Set it as the manual for your machine describes and test on a scrap of the fabric you sew.\u003c\/p\u003e\n\u003cp\u003eBrowse \u003ca href=\"\/collections\/kansai-special-knives-and-cutters\"\u003eKansai Special knives \u0026amp; cutters\u003c\/a\u003e, or see \u003ca href=\"\/collections\/kansai-special-spare-parts\"\u003eKansai Special spare parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":51105711685797,"sku":"KAN-05-548","price":30.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_knife_v2.png?v=1793912220"},{"product_id":"kansai-special-05-8120-0-upper-knife","title":"Kansai Special 05-8120-0 Upper Knife","description":"\u003ch2\u003eKansai Special 05-8120-0 Upper Knife\u003c\/h2\u003e\n\u003cp\u003eKansai Special spare part 05-8120-0: Upper Knife. This is a cutting knife of the machine. Kansai Special lists this part in the books of many machine families, among them NW\/NL, NR and RX.\u003c\/p\u003e\n\u003cp\u003eA knife does not work alone. It is normally set against a partner blade and runs close to the stitch-forming parts, so its edge, height and pressure all show up in the seam.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e05-8120-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Upper Knife\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 05-812\u003c\/li\u003e\n\u003cli\u003eType: Knives \u0026amp; Cutters\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: NW\/NL, NR, RX, WX\/MMX, NRE, NC and 1 more\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eUpper and lower knives, and left and right versions, are not interchangeable. Check the name and the number against the old part. Compare the part with your old one or with your machine's parts list, because one number can serve several related models.\u003c\/p\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThreads are not cut cleanly or are left hanging\u003c\/li\u003e\n\u003cli\u003eWorn so short that the blade can no longer be set to its partner\u003c\/li\u003e\n\u003cli\u003eA blade that is bent, cracked or rusted\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKnife edges are very sharp, so handle them with care. Switch the machine off and unplug it before you start, set the knife pressure as the manual for your machine describes, and test on a scrap of fabric.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-6580-0-lower-knife\"\u003eKansai Special 05-6580-0 Lower Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-5490-0-leaf-spring-upper\"\u003eKansai Special 05-5490-0 Leaf Spring (Upper)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-5480-0-lower-knife\"\u003eKansai Special 05-5480-0 Lower Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-5470-0-plate\"\u003eKansai Special 05-5470-0 Plate\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse \u003ca href=\"\/collections\/kansai-special-knives-and-cutters\"\u003eKansai Special knives \u0026amp; cutters\u003c\/a\u003e, or see \u003ca href=\"\/collections\/kansai-special-spare-parts\"\u003eKansai Special spare parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":51105711784101,"sku":"KAN-05-812","price":7.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_knife_v2.png?v=1793912220"},{"product_id":"kansai-special-07-4320-0-lower-knife","title":"Kansai Special 07-4320-0 Lower Knife","description":"\u003ch2\u003eKansai Special 07-4320-0 Lower Knife\u003c\/h2\u003e\n\u003cp\u003eKansai Special spare part 07-4320-0: Lower Knife. This is one replaceable cutting blade, clamped or screwed into its holder. Kansai Special shows it in the parts books for NW\/NL and BLX.\u003c\/p\u003e\n\u003cp\u003eKnives trim the fabric edge or cut the thread and the chain. They work as a pair, a moving blade against a fixed one, and the cut is clean only when both edges are sharp and meet with light pressure, so knives are wear items.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e07-4320-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Lower Knife\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 07-432\u003c\/li\u003e\n\u003cli\u003eType: Knives \u0026amp; Cutters\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: NW\/NL, BLX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMore knife pressure is needed than before to cut cleanly\u003c\/li\u003e\n\u003cli\u003eWorn so short that the blade can no longer be set to its partner\u003c\/li\u003e\n\u003cli\u003eThe cutting edge looks rounded or shiny instead of sharp\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eKnife edges are very sharp, so handle them with care. Switch the machine off and unplug it before you start, set the knife pressure as the manual for your machine describes, and test on a scrap of fabric.\u003c\/p\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eRead the name for the position (upper or lower) and the side (left or right), and watch for a chain cutter, which does a different job from the knives that trim the fabric. Then confirm the part number. One Kansai Special number can serve several related models, so compare the part with the old one.\u003c\/p\u003e\n\u003cp\u003eBrowse \u003ca href=\"\/collections\/kansai-special-knives-and-cutters\"\u003eKansai Special knives \u0026amp; cutters\u003c\/a\u003e, or see \u003ca href=\"\/collections\/kansai-special-spare-parts\"\u003eKansai Special spare parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":51105711816869,"sku":"KAN-07-432","price":7.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_knife_v2.png?v=1793912220"},{"product_id":"kansai-special-07-6310-0-upper-knife","title":"Kansai Special 07-6310-0 Upper Knife","description":"\u003ch2\u003eKansai Special 07-6310-0 Upper Knife\u003c\/h2\u003e\n\u003cp\u003ePart 07-6310-0 in the Kansai Special parts list is an upper knife. It is the blade that cuts off the surplus fabric or the thread chain at the seam. The Kansai Special parts books for NFS and FSX list this part.\u003c\/p\u003e\n\u003cp\u003eThe cutting pair of an overlock or chainstitch machine wears with every seam it trims. A dull or chipped blade shows first as frayed edges and thread ends left hanging.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e07-6310-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Upper Knife\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 07-631\u003c\/li\u003e\n\u003cli\u003eType: Knives \u0026amp; Cutters\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: NFS, FSX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWorn so short that the blade can no longer be set to its partner\u003c\/li\u003e\n\u003cli\u003eThe fabric edge frays or is cut unevenly\u003c\/li\u003e\n\u003cli\u003eMore knife pressure is needed than before to cut cleanly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen you replace one knife, check the partner. If its edge is chipped, rounded or burred, replace both. Set the knife pressure and timing as the manual for your machine describes. Knife edges are very sharp, so handle them with care. Switch the machine off and unplug it before you start, and turn the handwheel by hand through a full stitch before the first run.\u003c\/p\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eKnives are specific to the machine and its cutting mechanism, and many are handed (left or right, upper or lower). Keep the same side and position as the knife you remove. Compare the part with your old one or with your machine's parts list, because one number can serve several related models.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-19-6190-0-looper\"\u003eKansai Special 19-6190-0 Looper\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-19-6170-0-spreader-looper\"\u003eKansai Special 19-6170-0 Spreader Looper\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-07-6340-0-lower-knife\"\u003eKansai Special 07-6340-0 Lower Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-27-6450-0-cover\"\u003eKansai Special 27-6450-0 Cover\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow tight should the knife pressure be?\u003c\/strong\u003e\u003cbr\u003eOnly as tight as a clean cut needs. Extra pressure heats and wears both blades faster. Set it as the manual for your machine describes and test on a scrap of the fabric you sew.\u003c\/p\u003e\n\u003cp\u003eRelated: \u003ca href=\"\/collections\/kansai-special-knives-and-cutters\"\u003eKnives \u0026amp; Cutters\u003c\/a\u003e | \u003ca href=\"\/collections\/kansai-special-spare-parts\"\u003eKansai Special spare parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":51105711915173,"sku":"KAN-07-631","price":15.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_knife_v2.png?v=1793912220"},{"product_id":"kansai-special-07-6330-0-lower-knife-clamp","title":"Kansai Special 07-6330-0 Lower Knife Clamp","description":"\u003ch2\u003eKansai Special 07-6330-0 Lower Knife Clamp\u003c\/h2\u003e\n\u003cp\u003ePart 07-6330-0 in the Kansai Special parts list is a lower knife clamp. It is a holder, clamp, guard or chain-off blade of the cutting group. Kansai Special shows it in the parts books for NFS and FSX.\u003c\/p\u003e\n\u003cp\u003eWhenever a knife is changed, the parts around it deserve a look. A damaged blade seat, a bent guard or a chain-off blade with a rounded edge will spoil the cut of even a new knife.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e07-6330-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Lower Knife Clamp\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 07-633\u003c\/li\u003e\n\u003cli\u003eType: Knives \u0026amp; Cutters\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: NFS, FSX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eHolders, clamps, guards and chain-off blades from different machines can look alike but are made for one knife and one position. The shape of the seat or the edge matters more than the overall look, so choose by the part number. Compare the part with your old one or with your machine's parts list, because one number can serve several related models.\u003c\/p\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAt the seam end the thread chain is no longer cut off cleanly\u003c\/li\u003e\n\u003cli\u003eThe mounting is loose, bent or damaged\u003c\/li\u003e\n\u003cli\u003eRubbing against the needle plate, a looper or another moving part\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eClean the seat and the screws of lint and old oil, fit the part square, and turn the handwheel by hand to see that the blades pass without rubbing. Mind the cutting edges: they are very sharp.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-07-6340-0-lower-knife\"\u003eKansai Special 07-6340-0 Lower Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-07-6310-0-upper-knife\"\u003eKansai Special 07-6310-0 Upper Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-19-6190-0-looper\"\u003eKansai Special 19-6190-0 Looper\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-19-6170-0-spreader-looper\"\u003eKansai Special 19-6170-0 Spreader Looper\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMore in this group: \u003ca href=\"\/collections\/kansai-special-knives-and-cutters\"\u003eKansai Special knives \u0026amp; cutters\u003c\/a\u003e. Everything from this maker: \u003ca href=\"\/collections\/kansai-special-spare-parts\"\u003eall Kansai Special spare parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":51105711947941,"sku":"KAN-07-633","price":21.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_knife_v2.png?v=1793912220"},{"product_id":"kansai-special-07-6340-0-lower-knife","title":"Kansai Special 07-6340-0 Lower Knife","description":"\u003ch2\u003eKansai Special 07-6340-0 Lower Knife\u003c\/h2\u003e\n\u003cp\u003eKansai Special 07-6340-0 is a lower knife, a cutting knife of the machine. This part appears in the Kansai Special parts books for NFS and FSX.\u003c\/p\u003e\n\u003cp\u003eHow often a knife needs changing depends on the work. Heavy, coated and synthetic fabrics, and fused interlinings, tend to dull an edge sooner than light cotton knit.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e07-6340-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Lower Knife\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 07-634\u003c\/li\u003e\n\u003cli\u003eType: Knives \u0026amp; Cutters\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: NFS, FSX\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eKnives are specific to the machine and its cutting mechanism, and many are handed (left or right, upper or lower). Keep the same side and position as the knife you remove.\u003c\/p\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWorn so short that the blade can no longer be set to its partner\u003c\/li\u003e\n\u003cli\u003eThreads are not cut cleanly or are left hanging\u003c\/li\u003e\n\u003cli\u003eA blade that is bent, cracked or rusted\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSwitch the machine off and unplug it before you start, and handle the knife with care because its edge is very sharp. Clean lint and old thread out of the knife seat so that the new blade sits flat and square.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-19-6190-0-looper\"\u003eKansai Special 19-6190-0 Looper\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-19-6170-0-spreader-looper\"\u003eKansai Special 19-6170-0 Spreader Looper\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-07-6330-0-lower-knife-clamp\"\u003eKansai Special 07-6330-0 Lower Knife Clamp\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-07-6310-0-upper-knife\"\u003eKansai Special 07-6310-0 Upper Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRelated: \u003ca href=\"\/collections\/kansai-special-knives-and-cutters\"\u003eKnives \u0026amp; Cutters\u003c\/a\u003e | \u003ca href=\"\/collections\/kansai-special-spare-parts\"\u003eKansai Special spare parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":51105711980709,"sku":"KAN-07-634","price":15.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_knife_v2.png?v=1793912220"},{"product_id":"kansai-special-07-7020-0-upper-knife-left","title":"Kansai Special 07-7020-0 Upper Knife (Left)","description":"\u003ch2\u003eKansai Special 07-7020-0 Upper Knife (Left)\u003c\/h2\u003e\n\u003cp\u003eKansai Special spare part 07-7020-0: Upper Knife (Left). This is a single blade; any partner knife is a separate part. The Kansai Special parts books for NW\/NL, BLX and DVK\/BK list this part.\u003c\/p\u003e\n\u003cp\u003eKnives are consumables: the edge dulls with fabric, glue and thread. Changing them on time keeps the seam edge clean and spares the other cutting parts.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e07-7020-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Upper Knife (Left)\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 07-702\u003c\/li\u003e\n\u003cli\u003eType: Knives \u0026amp; Cutters\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: NW\/NL, BLX, DVK\/BK\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eUpper and lower knives, and left and right versions, are not interchangeable. Check the name and the number against the old part. One Kansai Special number can serve several related models, so compare the part with the old one.\u003c\/p\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThreads are not cut cleanly or are left hanging\u003c\/li\u003e\n\u003cli\u003eWorn so short that the blade can no longer be set to its partner\u003c\/li\u003e\n\u003cli\u003eThe fabric edge frays or is cut unevenly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSwitch the machine off and unplug it before you start, and handle the knife with care because its edge is very sharp. Clean lint and old thread out of the knife seat so that the new blade sits flat and square.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-07-4320-0-lower-knife\"\u003eKansai Special 07-4320-0 Lower Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-14-5670-0-needle-plate\"\u003eKansai Special 14-5670-0 Needle Plate\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eShould I replace both knives at once?\u003c\/strong\u003e\u003cbr\u003eOften, yes. One knife of the pair usually wears first, but a new knife against a chipped or rounded partner cuts poorly and wears faster. If the partner's edge is still clean and sharp, replacing one knife is fine.\u003c\/p\u003e\n\u003cp\u003eRelated: \u003ca href=\"\/collections\/kansai-special-knives-and-cutters\"\u003eKnives \u0026amp; Cutters\u003c\/a\u003e | \u003ca href=\"\/collections\/kansai-special-spare-parts\"\u003eKansai Special spare parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":51105712013477,"sku":"KAN-07-702","price":30.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_knife_v2.png?v=1793912220"},{"product_id":"kansai-special-05-6580-0-lower-knife","title":"Kansai Special 05-6580-0 Lower Knife","description":"\u003ch2\u003eKansai Special 05-6580-0 Lower Knife\u003c\/h2\u003e\n\u003cp\u003eKansai Special 05-6580-0 is a lower knife, one replaceable cutting blade, clamped or screwed into its holder. Kansai Special lists this part in the books of many machine families, among them NW\/NL, NR and RX.\u003c\/p\u003e\n\u003cp\u003eA knife does not work alone. It is normally set against a partner blade and runs close to the stitch-forming parts, so its edge, height and pressure all show up in the seam.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e05-6580-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Lower Knife\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 05-658\u003c\/li\u003e\n\u003cli\u003eType: Knives \u0026amp; Cutters\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: NW\/NL, NR, RX, WX\/MMX, NRE, NC and 1 more\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA blade that is bent, cracked or rusted\u003c\/li\u003e\n\u003cli\u003eThe fabric edge frays or is cut unevenly\u003c\/li\u003e\n\u003cli\u003eThere are chips or nicks along the cutting edge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSwitch the machine off and unplug it before you start. Set the knife pressure and timing as the manual for your machine describes, and turn the handwheel by hand through a full stitch before the first run.\u003c\/p\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eKnives are specific to the machine and its cutting mechanism, and many are handed (left or right, upper or lower). Keep the same side and position as the knife you remove.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-5490-0-leaf-spring-upper\"\u003eKansai Special 05-5490-0 Leaf Spring (Upper)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-5480-0-lower-knife\"\u003eKansai Special 05-5480-0 Lower Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-5470-0-plate\"\u003eKansai Special 05-5470-0 Plate\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-05-5460-0-cover\"\u003eKansai Special 05-5460-0 Cover\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow tight should the knife pressure be?\u003c\/strong\u003e\u003cbr\u003eOnly as tight as a clean cut needs. Extra pressure heats and wears both blades faster. Set it as the manual for your machine describes and test on a scrap of the fabric you sew.\u003c\/p\u003e\n\u003cp\u003eMore in this group: \u003ca href=\"\/collections\/kansai-special-knives-and-cutters\"\u003eKansai Special knives \u0026amp; cutters\u003c\/a\u003e. Everything from this maker: \u003ca href=\"\/collections\/kansai-special-spare-parts\"\u003eall Kansai Special spare parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":51105712046245,"sku":"KAN-05-658","price":39.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_knife_v2.png?v=1793912220"},{"product_id":"kansai-special-07-7030-0-upper-knife-right","title":"Kansai Special 07-7030-0 Upper Knife (Right)","description":"\u003ch2\u003eKansai Special 07-7030-0 Upper Knife (Right)\u003c\/h2\u003e\n\u003cp\u003eKansai Special spare part 07-7030-0: Upper Knife (Right). This is the blade that cuts off the surplus fabric or the thread chain at the seam. The Kansai Special parts books for NW\/NL, BLX and DVK\/BK list this part.\u003c\/p\u003e\n\u003cp\u003eHow often a knife needs changing depends on the work. Heavy, coated and synthetic fabrics, and fused interlinings, tend to dull an edge sooner than light cotton knit.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e07-7030-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Upper Knife (Right)\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 07-703\u003c\/li\u003e\n\u003cli\u003eType: Knives \u0026amp; Cutters\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: NW\/NL, BLX, DVK\/BK\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThere are chips or nicks along the cutting edge\u003c\/li\u003e\n\u003cli\u003eThe fabric edge frays or is cut unevenly\u003c\/li\u003e\n\u003cli\u003eThe cutting edge looks rounded or shiny instead of sharp\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSwitch the machine off and unplug it before you start. Set the knife pressure and timing as the manual for your machine describes, and turn the handwheel by hand through a full stitch before the first run.\u003c\/p\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eKnives are specific to the machine and its cutting mechanism, and many are handed (left or right, upper or lower). Keep the same side and position as the knife you remove. One Kansai Special number can serve several related models, so compare the part with the old one.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-07-7020-0-upper-knife-left\"\u003eKansai Special 07-7020-0 Upper Knife (Left)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-14-5670-0-needle-plate\"\u003eKansai Special 14-5670-0 Needle Plate\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eShould I replace both knives at once?\u003c\/strong\u003e\u003cbr\u003eOften, yes. One knife of the pair usually wears first, but a new knife against a chipped or rounded partner cuts poorly and wears faster. If the partner's edge is still clean and sharp, replacing one knife is fine.\u003c\/p\u003e\n\u003cp\u003eSame group: \u003ca href=\"\/collections\/kansai-special-knives-and-cutters\"\u003eKnives \u0026amp; Cutters\u003c\/a\u003e. Same maker: \u003ca href=\"\/collections\/kansai-special-spare-parts\"\u003eall Kansai Special spare parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":51105712079013,"sku":"KAN-07-703","price":30.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_knife_v2.png?v=1793912220"},{"product_id":"kansai-special-98-6620-0-chain-off-cutting-knife-lower","title":"Kansai Special 98-6620-0 Chain-Off Cutting Knife (Lower)","description":"\u003ch2\u003eKansai Special 98-6620-0 Chain-Off Cutting Knife (Lower)\u003c\/h2\u003e\n\u003cp\u003eChain-Off Cutting Knife (Lower), Kansai Special part number 98-6620-0. This is a cutting knife of the machine. Kansai Special lists this part in the books of many machine families, among them NFS, FSX and SX.\u003c\/p\u003e\n\u003cp\u003eKnives trim the fabric edge or cut the thread and the chain. They work as a pair, a moving blade against a fixed one, and the cut is clean only when both edges are sharp and meet with light pressure, so knives are wear items.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e98-6620-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Chain-Off Cutting Knife (Lower)\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 98-662\u003c\/li\u003e\n\u003cli\u003eType: Knives \u0026amp; Cutters\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: NFS, FSX, SX, SQ\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA blade that is bent, cracked or rusted\u003c\/li\u003e\n\u003cli\u003eThe fabric edge frays or is cut unevenly\u003c\/li\u003e\n\u003cli\u003eThere are chips or nicks along the cutting edge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSwitch the machine off and unplug it before you start. Set the knife pressure and timing as the manual for your machine describes, and turn the handwheel by hand through a full stitch before the first run.\u003c\/p\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eKnives of similar shape can differ in length, thickness and edge angle, and some are made for particular fabrics. Choose by the full part number, not by how the blade looks.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-98-6630-0-chain-off-cutting-knife-upper\"\u003eKansai Special 98-6630-0 Chain-Off Cutting Knife (Upper)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-98-8570-0-o-ring\"\u003eKansai Special 98-8570-0 O-Ring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse \u003ca href=\"\/collections\/kansai-special-knives-and-cutters\"\u003eKansai Special knives \u0026amp; cutters\u003c\/a\u003e, or see \u003ca href=\"\/collections\/kansai-special-spare-parts\"\u003eKansai Special spare parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":51105719386277,"sku":"KAN-98-662","price":17.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_knife_v2.png?v=1793912220"},{"product_id":"kansai-special-98-6630-0-chain-off-cutting-knife-upper","title":"Kansai Special 98-6630-0 Chain-Off Cutting Knife (Upper)","description":"\u003ch2\u003eKansai Special 98-6630-0 Chain-Off Cutting Knife (Upper)\u003c\/h2\u003e\n\u003cp\u003eKansai Special spare part 98-6630-0: Chain-Off Cutting Knife (Upper). This is a single blade; any partner knife is a separate part. The same part number is used across many Kansai Special machine families, for example NFS, FSX and SX.\u003c\/p\u003e\n\u003cp\u003eThe cutting pair of an overlock or chainstitch machine wears with every seam it trims. A dull or chipped blade shows first as frayed edges and thread ends left hanging.\u003c\/p\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKansai Special part number: \u003cstrong\u003e98-6630-0\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePart name: Chain-Off Cutting Knife (Upper)\u003c\/li\u003e\n\u003cli\u003eShort form of the number: 98-663\u003c\/li\u003e\n\u003cli\u003eType: Knives \u0026amp; Cutters\u003c\/li\u003e\n\u003cli\u003eKansai Special parts books that list this part: NFS, FSX, SX, SQ\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to replace it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThere are chips or nicks along the cutting edge\u003c\/li\u003e\n\u003cli\u003eThreads are not cut cleanly or are left hanging\u003c\/li\u003e\n\u003cli\u003eWorn so short that the blade can no longer be set to its partner\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen you replace one knife, check the partner. If its edge is chipped, rounded or burred, replace both. Set the knife pressure and timing as the manual for your machine describes. Knife edges are very sharp, so handle them with care. Switch the machine off and unplug it before you start, and turn the handwheel by hand through a full stitch before the first run.\u003c\/p\u003e\n\u003ch3\u003eChoosing the right part\u003c\/h3\u003e\n\u003cp\u003eKnives are specific to the machine and its cutting mechanism, and many are handed (left or right, upper or lower). Keep the same side and position as the knife you remove. The part number is the safest check: the same number can be used on more than one model.\u003c\/p\u003e\n\u003ch3\u003eMore Kansai Special parts for the same machines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-98-6620-0-chain-off-cutting-knife-lower\"\u003eKansai Special 98-6620-0 Chain-Off Cutting Knife (Lower)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kansai-special-98-8570-0-o-ring\"\u003eKansai Special 98-8570-0 O-Ring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eShould I replace both knives at once?\u003c\/strong\u003e\u003cbr\u003eOften, yes. One knife of the pair usually wears first, but a new knife against a chipped or rounded partner cuts poorly and wears faster. If the partner's edge is still clean and sharp, replacing one knife is fine.\u003c\/p\u003e\n\u003cp\u003eMore in this group: \u003ca href=\"\/collections\/kansai-special-knives-and-cutters\"\u003eKansai Special knives \u0026amp; cutters\u003c\/a\u003e. Everything from this maker: \u003ca href=\"\/collections\/kansai-special-spare-parts\"\u003eall Kansai Special spare parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"PRIZZI SEWING MACHINE CO.","offers":[{"title":"Default Title","offer_id":51105721319589,"sku":"KAN-98-663","price":17.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7593\/5397\/files\/kp_knife_v2.png?v=1793912220"}],"url":"https:\/\/prizzisewing.com\/collections\/kansai-special-knives-and-cutters.oembed","provider":"PRIZZI SEWING MACHINE CO.","version":"1.0","type":"link"}