Product Description
CMT Round Nose Bit - 3/8" Diameter, 3/16" Radius, 1/2" Shank by CMT is a precision-ground carbide-tipped routing bit engineered for creating smooth, semi-circular coves, decorative grooves, and flowing fluted profiles in wood and wood-based materials. Whether you are adding signature motifs to cabinet doors and drawer fronts or carving delicate veining details across panels, this round nose bit delivers consistent, clean results in solid hardwood, softwood, plywood, MDF, and other wood derivatives. With a right-hand rotation, a 2-flute cutting configuration, and a robust 1/2" shank for stable chuck engagement, this bit is equally at home in a handheld router, on a router table, or mounted in a CNC routing machine.
Key Features
- 3/8" Cutting Diameter with 3/16" Radius - produces a precisely proportioned semi-circular cove profile, giving decorative grooves, fluting channels, and veining cuts clean geometry and a smooth finished surface right off the bit.
- Carbide-Tipped (HW) Flutes - hard carbide cutting edges retain sharpness significantly longer than high-speed steel alternatives, reducing the frequency of bit changes and maintaining consistent cut quality over extended use in hardwoods and composites.
- 2-Flute Cutting Configuration - dual flutes provide balanced cutting action, minimizing vibration and chatter during passes so decorative profiles come out crisp and uniform without tearout.
- 1/2" Shank - the larger shank diameter seats securely in 1/2" collets, reducing flex and deflection during deep or extended cuts, which directly improves accuracy and surface finish quality.
- 1" Cutting Height - ample cutting depth allows a single pass to rout full-depth decorative grooves and coves in most panel and door-front applications, saving time on multi-pass setups.
- Right-Hand (RH) Rotation - standard right-hand rotation is compatible with the vast majority of routers and router tables, making this bit a straightforward drop-in choice for most workshop setups.
- 2-5/8" Total Length - a balanced overall length provides enough reach for versatile positioning above or below a router table fence while keeping the bit rigid and stable during operation.
Why This Product
- The 3/16" radius profile is a classic size for fluting columns, veining panel faces, and creating repeating decorative grooves on door fronts and drawer panels - one bit covers a wide range of furniture and cabinetry detailing tasks.
- The carbide-tipped (HW) construction means this bit handles not only solid hardwood and softwood but also MDF, plywood, and other wood derivatives without rapid edge wear, making it a practical everyday choice for shops working across multiple material types.
- The 1/2" shank paired with a 2-flute geometry significantly reduces vibration compared to smaller-shank bits, which translates directly to smoother cove walls and less sanding time after routing.
- At 1" of cutting height and 2-5/8" total length, this bit is sized for real-world cabinetry and millwork applications - deep enough to produce meaningful decorative profiles in a single controlled pass rather than requiring multiple shallow depth increments.
Specifications
- Manufacturer Part Number: 814.595.11
- Brand: CMT Orange Tools
- Diameter: 3/8"
- Radius: 3/16"
- Shank: 1/2"
- Cutting Height: 1"
- Total Length: 2-5/8"
- Number of Teeth (Flutes): 2
- Material: Carbide-Tipped (HW)
- Rotation: Right-Hand (RH)
Approved Applications
- Routing semi-circular coves in solid hardwood and softwood
- Decorative groove routing on cabinet doors and drawer fronts
- Fluting columns, pilasters, and architectural millwork details
- Veining and surface detailing on panels and flat stock
- Creating signature decorative motifs on wood derivative panels including MDF, plywood, and chipboard
Frequently Asked Questions
What profile shape does this bit cut?
This is a round nose bit, also commonly called a core box bit. It cuts a perfectly semi-circular cove profile with a 3/16" radius, producing a finished groove width of 3/8". It is the correct choice for fluting, veining, and decorative cove routing where a smooth, rounded channel bottom is required.
Is this bit compatible with a standard 1/2" router collet?
Yes. The bit has a 1/2" shank and is designed for use in any router or router table equipped with a 1/2" collet. It uses right-hand rotation, which is standard for the overwhelming majority of handheld routers, router tables, and CNC routing machines.
What materials can this round nose bit cut?
The carbide-tipped (HW) cutting flutes are suited for solid hardwood, softwood, plywood, MDF, chipboard, and other wood derivatives. The hard carbide construction maintains a sharp cutting edge across these material types without the rapid dulling that would occur with standard high-speed steel bits.
How deep a cove can this bit rout in a single pass?
The bit provides a cutting height of 1", which is the maximum depth of material the flutes can engage. For decorative grooves and fluting profiles in typical panel and door-front work, it is good practice to approach full depth in multiple incremental passes rather than a single full-depth plunge, particularly in dense hardwoods, to protect both the bit and the workpiece surface.
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