Product Description
The CMT Contractor Round Nose Bit is a professional-grade routing bit engineered for sign makers, cabinet makers, and woodworkers who need clean, consistent semi-circular coves and decorative grooves. With a 1/2 in. cutting diameter, 1/4 in. radius, and 1/4 in. shank, this bit carves smooth, flowing flutes and veining profiles in solid wood, plywood, MDF, and a wide range of wood products. Featuring two carbide-tipped cutting edges and right-hand rotation, it delivers the precision and surface quality that professional routing applications demand.
Key Features
- Two carbide-tipped cutting edges - provide a smooth, clean cut through wood and wood products, reducing tear-out and finishing time on decorative projects.
- 1/4 in. radius profile - produces a true semi-circular cove in a single pass, making it ideal for consistent fluting, veining, and decorative groove work on doors, drawer fronts, and signage.
- 1/4 in. shank - compatible with a wide range of handheld routers and router tables that accept standard 1/4 in. collets, giving the bit broad versatility across common shop setups.
- 1/2 in. cutting height - allows deep, full-profile passes so decorative coves and grooves can be completed efficiently without multiple shallow repetitions.
- Right-hand rotation - matches standard router spindle direction, ensuring stable, predictable cutting behavior and reducing vibration during use.
- HW (carbide) material construction - hard-wearing carbide maintains a sharp cutting edge longer than high-speed steel, extending the usable life of the bit across high-volume professional work.
Why This Product
- Specifically designed for professional sign makers and cabinet makers, this round nose bit is purpose-built to create decorative doors, drawer fronts, and custom signage - not just a general-purpose cove cutter.
- The two carbide-tipped cutting edges deliver a smooth finish directly off the router, reducing the need for extensive sanding or cleanup on finished decorative surfaces.
- At 1 9/16 in. total length with a 1/4 in. shank, this bit is compact and well-balanced for both handheld router use and router table setups, offering flexibility across different working methods.
- The 1/4 in. radius produces a precise half-round profile every time, making it the right choice when consistent, repeatable decorative groove profiles are required across multiple workpieces.
Specifications
- Manufacturer Part Number: 81404
- Brand: CMT Orange Tools
- Diameter: 1/2 in.
- Cutting Height: 1/2 in.
- Total Length: 1 9/16 in.
- Radius: 1/4 in.
- Shank: 1/4 in.
- Number of Teeth: 2
- Blade Material: Carbide-Tipped (HW)
- Rotation: Right-hand (RH)
Approved Applications
- Routing semi-circular coves and decorative grooves
- Fluting on cabinet doors and drawer fronts
- Veining and decorative sign routing
- Adding decorative profiles to creative woodworking projects
Frequently Asked Questions
What type of profile does this bit cut?
This round nose bit cuts a semi-circular cove profile with a 1/4 in. radius, producing a smooth, rounded groove suitable for fluting, veining, and decorative groove work in wood and wood products.
What shank size does this bit use, and what machines is it compatible with?
This bit uses a 1/4 in. shank, making it compatible with handheld routers and router tables fitted with a standard 1/4 in. collet. It can also be used with CNC routing machines that accept this shank size.
What materials can this round nose bit cut?
This bit is designed for use in wood and wood products, including solid hardwood, softwood, plywood, and MDF - common materials used in cabinet making, door panel routing, and sign making applications.
How many cutting edges does this bit have, and why does that matter?
This bit features 2 carbide-tipped cutting edges. Two cutting edges provide a balanced cut, smoother surface finish, and more consistent results compared to single-flute designs, which is especially important on decorative surfaces where finish quality is critical.
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