CMT Round Nose Bit - 1 1/4" Diameter, 5/8" Radius, 1/2" Shank by CMT is a precision carbide-tipped routing bit engineered to create smooth, semi-circular coves, decorative grooves, and flowing fluted profiles in wood and wood derivative materials. Whether you are personalizing cabinet doors, drawer fronts, panels, or any flat surface, this round nose (core box) bit delivers the clean, repeatable results needed for signature decorative accents. With a right-hand rotation, a 2-flute design, and a solid HW (carbide) construction, it is compatible with handheld routers, router tables, and CNC routing machines equipped with a 1/2" collet.

Key Features

• 1 1/4" Cutting Diameter with 5/8" Radius - produces a full, wide semi-circular profile in a single pass, allowing you to cut flutes, coves, and veining channels with consistent depth and smooth curves.
• HW Carbide-Tipped Flutes (2 flutes) - hard-wearing carbide cutting edges stay sharper longer than high-speed steel, reducing the need for frequent resharpening and maintaining cut quality across hardwoods, softwoods, plywood, MDF, and other wood derivatives.
• 1/2" Shank - the larger 1/2" shank diameter provides superior rigidity and reduced vibration compared to smaller shanks, which translates directly into cleaner, chatter-free cuts and improved surface finish.
• Right-Hand Rotation (RH) - matches the standard rotation direction of virtually all handheld routers and router tables, ensuring straightforward setup without any special configuration.
• 3/4" Cutting Height - delivers ample depth capacity for decorative grooves and cove profiles in a wide range of panel and solid wood thicknesses.
• Compact 2-flute geometry - balanced 2-flute design promotes smooth chip evacuation and even load distribution, helping to reduce burning and tear-out on finished wood surfaces.
• 2-5/16" Total Length - provides enough reach for most decorative routing applications while keeping the bit stable and reducing deflection during cuts.

Why This Product

• If you need to rout consistent semi-circular coves, veining channels, or fluted profiles on doors, drawer fronts, or decorative panels, the 5/8" radius profile of this bit gives you a wide, elegant groove in a single, controlled pass - no multiple setups required.
• The carbide-tipped cutting edges make this bit suitable for use on solid hardwood, softwood, plywood, MDF, chipboard, and other wood derivatives, meaning one bit covers a broad range of project materials rather than requiring a specialized tool for each substrate.
• The 1/2" shank is specifically chosen for rigidity - it reduces vibration and deflection at the bit tip, which is especially important when routing decorative profiles where surface finish and accuracy of the curved profile are critical to the final appearance.
• With a 3/4" cutting height and 1 1/4" overall cutting diameter, this bit is sized to handle decorative fluting and cove work at a scale that reads well on furniture and cabinetry, giving routed details a bold, intentional look rather than a thin or shallow accent line.

Specifications

• Manufacturer Part Number: 814.817.11
• Brand: CMT Orange Tools
• Diameter: 1 1/4"
• Radius: 5/8"
• Shank: 1/2"
• Cutting Height: 3/4"
• Total Length: 2-5/16"
• Number of Teeth (Flutes): 2
• Rotation: Right-hand (RH)
• Material: HW (Carbide-Tipped)
• Bit Type: Round Nose (Core Box)

Approved Applications

• Routing semi-circular coves in solid hardwood and softwood
• Decorative groove routing on cabinet doors and drawer fronts
• Fluting columns, pilasters, and furniture legs
• Veining and surface detail work on panels and wood derivatives
• Creating signature decorative accents on MDF, plywood, chipboard, and similar materials