CMT Ovolo Sash Router Bit - 7/8" Diameter x 3/4" Cutting Height, 25/64" Radius, Profile B, 1/4" Shank by CMT is a precision-crafted bearing-guided router bit designed for woodworkers who need clean, repeatable ovolo profiles in window sash frames, divided light cabinet doors, and stile-and-rail joinery. Built with hardwood-grade carbide and engineered for right-hand rotation, this 2-tooth bit produces the classic rounded Profile B ovolo shape that gives fine furniture and architectural millwork their refined, traditional character. Whether you are routing straight door frames or curved glazing bars, this bit delivers smooth, accurate results in solid hardwood, softwood, and sheet goods alike.

Key Features

• Ovolo Profile B Shape (25/64" Radius) - produces the classic rounded ovolo contour used in divided light doors, sash bar windows, and stile-and-rail constructions, giving frames a finished, furniture-grade appearance.
• Bearing-Guided Design - allows the bit to follow curved as well as straight workpiece edges, making it possible to rout curved sash frames and decorative glazing bars without a fence setup.
• Hardwood Carbide (HW) Cutting Material - delivers long cutting life and clean edges across solid hardwoods, softwoods, plywood, and MDF, reducing the frequency of bit changes during production runs.
• 2-Tooth (2-Flute) Configuration - provides a balanced, efficient cut with good chip clearance, resulting in a smoother surface finish and reduced tear-out on fine cabinet and joinery work.
• 1/4" Shank Diameter - fits standard 1/4" collet routers, making this bit compatible with a wide range of handheld routers and compact router table setups commonly used for sash and cabinet door work.
• Right-Hand (RH) Rotation - matched to the standard direction of rotation on virtually all woodworking routers, ensuring proper cutting geometry and safe, predictable operation.
• Compact 2" Total Length - keeps the bit stiff and resistant to deflection during the cut, which translates directly to a cleaner, more consistent profile with less vibration.

Why This Product

• Purpose-built for sash and divided light work - the bearing-guided ovolo profile is specifically designed for routing the glazing bars and frame members used in true divided light doors and sash bar windows, eliminating the guesswork of setting up a fence for these profiles.
• Curved frame capability - because the bit is bearing-guided, it can handle curved sash frames that straight-fence setups simply cannot follow, opening up design options for arched cabinet doors and decorative window frames.
• Hardwood-grade carbide for durability - the HW carbide construction means the bit holds its edge longer when working through dense hardwoods and composite materials, keeping profile quality consistent from the first pass to the last.
• 1/4" shank versatility - the 1/4" shank format fits the broadest range of compact and mid-size routers, so this bit works equally well in a dedicated router table station or handheld for on-site joinery and custom cabinet shops.

Specifications

• Manufacturer Part Number: 855.307.11F
• Brand: CMT Orange Tools
• Diameter: 7/8"
• Cutting Height: 3/4"
• Total Length: 2"
• Radius: 25/64"
• Shank: 1/4"
• Profile: B
• Number of Teeth: 2
• Cutting Material: Hardwood Carbide (HW)
• Rotation: Right-Hand (RH)

Approved Applications

• True divided light cabinet door making
• Sash bar window frame routing
• Stile and rail joinery construction
• Curved glazing bar moulding
• Fine furniture door frame profiling
• Decorative architectural millwork