CMT Chamfer Bits with Insert Knives - 1-9/64" Diameter, 45 deg. Angle, 1/2" Shank by CMT are precision-engineered router bits designed for bevel cutting, chamfering, and decorative edgework on hardwood, softwood, MDF, laminates, and more. Equipped with two replaceable insert knives secured by special Torx screws, this bit delivers consistent 45 deg. chamfer profiles on portable routers and CNC machining centers alike. The integrated ball bearing guide rides along the workpiece edge to maintain accurate, repeatable chamfer depth without the need for counter-profiles - making it a reliable choice for production shops and craftsmen working with a wide range of materials.

Key Features

• Replaceable Insert Knives with Torx Screws - two knives are fixed by special Torx screws and can be swapped out quickly, reducing downtime and keeping tooling costs low for high-volume work.
• 4-Sided Knife Sharpening with 3 Extra Edges - each knife is sharpened on all 4 sides, providing three additional new cutting edges per knife before replacement is needed, extending the usable life of each insert significantly.
• Ball Bearing Guide - the integrated ball bearing guide eliminates the need for counter-profiles and self-registers against the workpiece edge, ensuring a consistent 45 deg. chamfer bevel on every pass.
• 45 deg. Chamfer Angle - the fixed 45 deg. cutting geometry produces clean, uniform bevel profiles ideal for decorative edgework, assembly joinery prep, and trim detailing.
• 1/2" Shank Diameter - the full 1/2" shank provides a secure, low-vibration grip in standard router collets and is compatible with both portable hand routers and CNC machining centers.
• Right-Hand Rotation - designed for standard right-hand (RH) rotation, compatible with the vast majority of router tables and handheld routers available.
• Hard Metal (HW) Construction - the hard metal insert material delivers the cutting performance and edge retention needed for precision work on laminates, MDF, and hardwood.

Why This Product

• The replaceable insert knife system means a worn edge does not require discarding the entire bit body - simply index or swap the knife, which reduces cost per edge and keeps production moving on demanding chamfering and beveling tasks.
• With 4-sided knives offering three extra new edges each, this bit is especially economical for shops that regularly machine laminates, MDF, or hardwood where edge wear occurs at higher frequency.
• The ball bearing guide provides self-referencing edge registration, so chamfer depth stays consistent across long runs without manual adjustment or custom counter-profiles - a practical advantage for repetitive production work.
• Compatibility with both portable hand routers and CNC machining centers makes this bit a flexible tool investment for shops that operate both formats or are transitioning between setups.

Specifications

• Manufacturer Part Number: 659.646.11
• Brand: CMT Orange Tools
• Chamfer Angle: 45 deg.
• Cutting Diameter: 1-9/64"
• Cutting Height: 5/16"
• Total Length: 2-23/32"
• Shank Diameter: 1/2"
• Number of Teeth: 2
• Rotation: RH (Right-Hand)
• Material: HW (Hard Metal)

Approved Applications

• Chamfering
• Beveling
• Decorative edgework
• Precision work on laminates
• Edge profiling on MDF
• Quick rounded and chamfered edges in hardwood
• Use on portable routers
• Use on CNC machining centers