{"product_id":"cmt-543-079-51-mortising-chisel-bit-set-5-16-diameter-3-4-shank","title":"CMT 543.079.51 - Mortising Chisel \u0026 Bit Set - 5\/16\" Diameter, 3\/4\" Shank","description":"\u003cp\u003eThe CMT 543.079.51 Mortising Chisel \u0026amp; Bit Set is engineered for woodworkers who refuse to compromise on the strength and accuracy of the classic mortise and tenon joint. While this traditional joint is notoriously difficult to master, CMT’s industrial-grade tooling simplifies the process, ensuring clean, square-walled mortises with every pass. Constructed from premium high-speed steel (HSS), this set is designed to withstand the rigorous friction and heat generated during heavy-duty boring operations in both hard and soft woods.\u003c\/p\u003e\u003cp\u003eEngineered for use with standard drill press mortising attachments or dedicated mortising machines, the chisel features a precision-ground edge for effortless wood fiber shearing, while the internal bit efficiently clears chips to prevent clogging. This synergy of design allows for flawless joinery in cabinetry, furniture making, and architectural millwork.\u003c\/p\u003e\u003ch3\u003ePerformance Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial High-Speed Steel (HSS):\u003c\/strong\u003e Provides exceptional durability and maintains a razor-sharp edge under high-heat conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Geometry:\u003c\/strong\u003e The chisel is ground to exacting tolerances to ensure perfectly square corners and vertical walls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficient Chip Evacuation:\u003c\/strong\u003e The internal drill bit is optimized to pull waste material upwards, reducing heat buildup and preventing bit deflection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e Fits most standard 3\/4\" (19mm) shank mortising machines and drill press attachments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration Dampening:\u003c\/strong\u003e Balanced construction minimizes chatter, ensuring a smoother finish on internal mortise faces.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e543.079.51\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCutting Diameter (D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5\/16\" (7.94mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShank Diameter (S)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3\/4\" (19mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRotation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRight Hand (RH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-Speed Steel (HSS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 (Z1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003e\u003c\/h3\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 x Hollow Square Mortising Chisel (5\/16\")\u003c\/li\u003e\n\u003cli\u003e1 x Matching Internal Boring Bit\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CMT","offers":[{"title":"Default Title","offer_id":53959729611118,"sku":"543.079.51","price":20.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0057\/0333\/6025\/files\/Untitled-June03_2026at08.52.21_76_1.jpg?v=1781495764","url":"https:\/\/wiselinetools.ca\/en-de\/products\/cmt-543-079-51-mortising-chisel-bit-set-5-16-diameter-3-4-shank","provider":"Wise Line Tools","version":"1.0","type":"link"}