CMT Solid Carbide Dovetail Bit - 5/16 in. Diameter, 8 deg. Angle, 1/4 in. Shank by CMT is a precision-ground routing bit engineered for clean, accurate dovetail joinery in a wide range of wood and wood-composite materials. Designed specifically for use with the Incra jig system, this bit brings professional-grade performance to both hand-tool enthusiasts and experienced woodworkers seeking reliable, repeatable results. The 8 deg. cutting angle produces the classic trapezoidal dovetail profile used in drawer construction, box making, and sliding dovetail joinery - delivering tight-fitting joints with minimal tearout.

Key Features

• Solid carbide (HWM) construction - provides exceptional hardness and edge retention compared to carbide-tipped alternatives, meaning fewer sharpenings and longer intervals between tool changes even in demanding production environments.
• 8 deg. dovetail angle - matches the geometry required for traditional dovetail joinery and Incra system compatibility, ensuring accurate, self-locking joints without guesswork.
• 5/16 in. cutting diameter - sized for precise, narrow dovetail slots ideal for delicate drawer construction and fine furniture work where oversized bits would remove too much material.
• 3/8 in. cutting height - provides sufficient depth of cut for full-profile dovetail joints in standard drawer sides and box components in a single pass.
• 1/4 in. shank - fits a broad range of handheld routers, router tables, and CNC routing machines without requiring a large-shank collet, making this bit highly versatile across tool inventories.
• 2-flute (2-tooth) design - balances cutting speed with surface finish quality, producing smooth joint walls that require little or no sanding before glue-up.
• Right-hand (RH) rotation - standard rotation compatible with virtually all routers used in woodworking applications.
• 2-1/8 in. total length - compact overall length maintains bit rigidity and reduces deflection during cutting, contributing to consistent joint accuracy.

Why This Product

• Built for Incra system users - the 8 deg. angle and 5/16 in. diameter are specifically matched to Incra jig specifications, so woodworkers using that system get a bit designed to work precisely with their setup rather than a generic approximation.
• Solid carbide for durability in hardwoods - unlike carbide-tipped bits, the all-carbide body resists heat buildup and edge chipping when routing dense solid hardwoods, making it a dependable choice for high-volume drawer production or repeat joinery work.
• Compact geometry for fine joinery - the combination of a 5/16 in. diameter and 3/8 in. cutting height keeps material removal controlled and precise, which is critical when fitting dovetail joints that must slide together cleanly without slop or binding.
• 1/4 in. shank for broad router compatibility - woodworkers who own smaller trim routers or compact router table setups can use this bit without adapters, expanding where and how dovetail joinery can be performed.

Specifications

• Manufacturer Part Number: 818.081.11
• Brand: CMT Orange Tools
• Diameter: 5/16 in.
• Angle: 8 deg.
• Shank: 1/4 in.
• Cutting Height: 3/8 in.
• Total Length: 2-1/8 in.
• Number of Teeth: 2
• Material: HWM (Solid Carbide)
• Rotation: Right-hand (RH)

Approved Applications

• Dovetail joints in solid hardwood and softwood
• Sliding dovetail joinery
• Drawer box construction
• Box and case making
• Incra jig system routing