{"product_id":"knew-concepts-mk-iv-3in-hd-jewelers-saw-frame-lever-tension-swivel-clamps","title":"Knew Concepts Mk.IV 3\" HD Saw Frame with Lever Tension \u0026 Swivel Blade Clamps","description":"\u003cp\u003eThe \u003cstrong\u003eKnew Concepts Mk.IV 3\" Heavy-Duty Jeweler's Saw Frame\u003c\/strong\u003e combines a \u003cstrong\u003ecam lever tension system\u003c\/strong\u003e with \u003cstrong\u003e360° swivel blade clamps\u003c\/strong\u003e for maximum rigidity and cutting control. The upgraded Mk.IV design features a heavier frame that delivers up to \u003cstrong\u003e60 pounds of blade tension\u003c\/strong\u003e—two to three times greater than earlier generations—eliminating frame flex and dramatically improving accuracy on dense or hard materials. Machined from heat-treated aluminum, this frame is built for long-term professional use.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavier Mk.IV frame\u003c\/strong\u003e provides exceptional strength and stiffness for precision cutting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCam lever tension system\u003c\/strong\u003e allows quick, repeatable blade changes without readjusting screw tension\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e360° swivel blade clamps\u003c\/strong\u003e rotate the blade freely in any direction, with detents every 45° for accurate, repeatable positioning\u003c\/li\u003e\n\u003cli\u003eMaintains full cutting accuracy and reduces blade breakage even under heavy tension\u003c\/li\u003e\n\u003cli\u003eMinimizes vibration and eliminates frame flex common in lighter saw frames\u003c\/li\u003e\n\u003cli\u003eMachined from heat-treated aluminum for strength, longevity, and corrosion resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eMk.IV Heavy-Duty Jeweler's Saw Frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThroat Depth\u003c\/th\u003e\n\u003ctd\u003e3\" (75 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTension System\u003c\/th\u003e\n\u003ctd\u003eCam Lever\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBlade Clamps\u003c\/th\u003e\n\u003ctd\u003e360° Swivel with 45° Detents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrame Material\u003c\/th\u003e\n\u003ctd\u003eHeat-treated aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum Tension\u003c\/th\u003e\n\u003ctd\u003eUp to 60 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePerformance Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for sawing thick or dense materials such as bone, ebony, and steel\u003c\/li\u003e\n\u003cli\u003eRigid structure improves tracking accuracy and control under load\u003c\/li\u003e\n\u003cli\u003eMaintains consistent tension across the full stroke for smooth, even cutting\u003c\/li\u003e\n\u003cli\u003eRotate the blade to any position for piercing, scrollwork, or specialized cuts\u003c\/li\u003e\n\u003cli\u003eLock into preset 45° positions for precise, repeatable blade angles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse \u0026amp; Care\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKeep clamp faces clean and aligned for optimal blade grip\u003c\/li\u003e\n\u003cli\u003eEnsure the blade is seated straight through both clamps before tensioning\u003c\/li\u003e\n\u003cli\u003eStore with blade relaxed if not in use for extended periods\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKnew Concepts Mk.IV 3\" Heavy-Duty Jeweler's Saw Frame with Cam Lever Tension and 360° Swivel Blade Clamps\u003c\/li\u003e\n\u003cli\u003ePrinted setup and operation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cp\u003eThe Knew Concepts Mk.IV Heavy-Duty Saw Frame is also available in \u003cstrong\u003e5\"\u003c\/strong\u003e and \u003cstrong\u003e8\"\u003c\/strong\u003e throat depths. All sizes can be ordered with cam lever tension alone or with the 360° swivel blade clamp configuration.\u003c\/p\u003e","brand":"Knew Concepts","offers":[{"title":"Default Title","offer_id":43583462146262,"sku":"149.683SC","price":119.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/knew-concepts-mk-iv-3-hd-jewelers-saw-frame-with-360-degree-swivel-blade-clamps-cam-lever-tension-otto-frei.jpg?v=1719956638","url":"https:\/\/www.ottofrei.com\/products\/knew-concepts-mk-iv-3in-hd-jewelers-saw-frame-lever-tension-swivel-clamps","provider":"Otto Frei","version":"1.0","type":"link"}