The CMT 818.128.11 Dovetail Bit is a precision-ground, carbide-tipped routing bit designed to cut the classic trapezoidal dovetail profile for joinery work. With a 14 deg. cutting angle, a 1/2 in. cutting diameter, and a 1/4 in. shank, this bit is purpose-built for use with the Incra system and compatible dovetail jigs - delivering crisp, repeatable dovetail joints whether you are building drawers, boxes, or decorative cabinetry in solid hardwood, softwood, or composite sheet goods. The right-hand rotation and 2-flute design work together to produce clean cuts with minimal tearout, making this an ideal choice for both professional woodworkers and dedicated hobbyists who demand consistent, furniture-quality results.

Key Features

• 14 deg. dovetail angle - matches the geometry required by the Incra dovetail routing system, ensuring tight-fitting joints without trial-and-error setup adjustments.
• 1/2 in. cutting diameter with 1/2 in. cutting height - provides enough profile depth to produce full-sized dovetail pins and tails in a single pass, saving time and reducing repositioning.
• HW (tungsten carbide) cutting material - stays sharp longer than high-speed steel alternatives, meaning more cuts per bit and lower cost per joint over the life of the tool.
• 2-flute (2-tooth) configuration - balances chip evacuation with surface finish quality, reducing heat buildup and leaving cleaner dovetail walls that require less sanding or paring.
• 1/4 in. shank - fits a wide range of handheld routers and compact router tables without requiring a collet reducer, giving you flexibility across machines.
• Right-hand (RH) rotation - standard feed direction for conventional router use, compatible with fixed-base, plunge, and table-mounted router setups.
• 2 1/16 in. total length - provides adequate clearance above the workpiece surface when used in a router table, reducing the risk of collet contact with the jig or fence.

Why This Product

• Specifically matched to the Incra dovetail system - the 14 deg. angle is not a generic approximation but the precise geometry the Incra jig is engineered around, so your joints come out square and snug from the very first test cut.
• Tungsten carbide construction means this bit handles not just solid hardwood and softwood, but also plywood, MDF, and laminates without premature dulling - one bit covers a broad range of material types in real shop use.
• The compact 1/4 in. shank and 2 1/16 in. total length make this bit compatible with trim routers and smaller router tables where a 1/2 in. shank bit would not fit, expanding where and how you can cut dovetails.
• With only 2 flutes and a right-hand rotation, this bit is straightforward to set up and run at standard router speeds, reducing learning curve for woodworkers who are new to dovetail routing with a jig.

Specifications

• Manufacturer Part Number: 818.128.11
• Brand: CMT Orange Tools
• Angle: 14 deg.
• Diameter: 1/2 in.
• Cutting Height: 1/2 in.
• Total Length: 2 1/16 in.
• Shank: 1/4 in.
• Number of Teeth: 2
• Material: HW (Tungsten Carbide)
• Rotation: Right-Hand (RH)

Approved Applications

• Dovetail joinery with the Incra routing system
• Through dovetail and half-blind dovetail joints
• Sliding dovetail joints for shelving and dividers
• Drawer box construction in solid hardwood and softwood
• Box making and decorative joinery in plywood and MDF