CMT Chamfer Bits with Insert Knives - 1 9/64" Diameter, 45 deg. Angle, 1/4" Shank by CMT are precision bevel router bits designed for clean, consistent chamfer cuts on a wide range of materials. Equipped with two replaceable hardwood-grade insert knives secured by special Torx screws, these 45 deg. chamfer bits deliver professional-quality edge profiles on hardwood, MDF, laminates, and more. A ball bearing guide provides accurate depth control, making them a reliable choice for portable routers and CNC machining centers alike.

Key Features

• Replaceable Insert Knives with Torx Screw Mounting - each knife is sharpened on all 4 sides, providing three extra new edges per knife, which significantly extends tooling life and reduces the cost of maintaining sharp, clean cutting performance.
• Two-Knife (2-Flute) Configuration - dual insert knives deliver balanced cutting action for smoother bevel surfaces and reduced vibration during routing operations.
• Ball Bearing Guide (Type 659) - the integrated bearing guide eliminates the need for counter-profiles, making it straightforward to follow an edge consistently and achieve a uniform 45 deg. chamfer depth without setup guesswork.
• Hardmetal (HW) Insert Material - carbide-grade insert knives maintain a sharp cutting edge longer than standard high-speed steel, making them well suited for demanding materials like MDF, laminates, and hard woods.
• Right-Hand Rotation - standard RH rotation is compatible with the vast majority of portable routers and CNC spindles, allowing straightforward use without special tooling configurations.
• 1/4" Shank Diameter - fits 1/4" collet routers widely used in portable and table-mounted applications, giving this bit broad machine compatibility for edge-beveling tasks.

Why This Product

• The four-sided, resharpened knife design means you get multiple fresh cutting edges from each insert - reducing downtime and replacement cost for shops doing frequent chamfering and decorative edgework on laminates or hardwood panels.
• The integrated ball bearing guide on the Type 659 body removes the dependency on a fence or counter-profile setup, letting you follow an edge freehand and produce repeatable 45 deg. bevels with consistent depth on every pass.
• With a 1 9/64" cutting diameter and 5/16" cutting height, this bit is sized appropriately for visible edge chamfers on workpieces where precise, clean profiles matter - such as furniture components, cabinet edges, and decorative trim in hardwood or MDF.
• Compatibility with both portable routers and CNC machining centers makes this a versatile chamfer tool for shops that run mixed workflows, from hand-guided routing at the bench to automated production runs.

Specifications

• Manufacturer Part Number: 659.046.11
• Brand: CMT Orange Tools
• Chamfer Angle: 45 deg.
• Cutting Diameter: 1-9/64"
• Cutting Height: 5/16"
• Total Length: 2-13/32"
• Shank Diameter: 1/4"
• Number of Knives: 2
• Knife Material: HW (Hardmetal/Carbide)
• Rotation: Right-Hand (RH)
• Bit Type: Guided (Ball Bearing)

Approved Applications

• Chamfering and beveling edges on hardwood, softwood, and plywood panels
• Decorative edgework and profile routing on furniture and cabinet components
• Precision chamfer cuts on MDF and chipboard
• Clean bevel edges on laminates and plastics
• Portable router and CNC machining center edge-profiling operations