Product Description
The CMT 657.692.11B Pattern/Flush Trim Bit with Insert Knives is a professional-grade routing tool combining flush trimming and pattern routing capabilities in a single 3/4 in. diameter bit with a 1/2 in. shank. Designed for right-hand rotation, this two-knife carbide router bit features reversible insert knives secured by Torx screws, top and bottom ball bearing guides for precision template and pattern work, and CMT's signature orange chrome non-stick body coating. Whether you are flush trimming laminates, routing patterns from templates, or finishing plywood and solid hardwood edges, this bit delivers consistent, clean results across a wide range of materials.
Key Features
- Dual-Purpose Pattern and Flush Trim Design - combines two common routing functions in one bit, eliminating the need to swap tools between flush trimming and pattern routing operations.
- Top and Bottom Ball Bearing Guides - both bearings keep the bit running true against the template or workpiece edge, providing added stability during difficult flush and finishing operations where a single bearing would allow wobble.
- Reversible Insert Knives (2 usable sides) - each knife is sharpened on both sides, so when one edge dulls it can be flipped to expose a fresh cutting edge, reducing downtime and extending the usable life of each knife.
- Torx Screw Fastening - special Torx screws lock the insert knives firmly in place for safe, high-speed routing without knife shifting or play during the cut.
- Orange Chrome Non-Stick Body Coating - CMT's orange chrome coating on the bit body resists resin build-up, prevents overheating, and protects against corrosion, helping the bit perform cleanly cut after cut.
- HW (Tungsten Carbide) Knife Material - hardwearing carbide insert knives handle hardwood, softwood, MDF, plywood, laminates, and plastics without rapid dulling, making this bit suitable for both production routing and shop use.
- 1/2 in. Shank Diameter - the 1/2 in. shank seats securely in router table and handheld router collets, reducing vibration and chatter compared to smaller shank sizes during flush and pattern trimming passes.
Why This Product
- The combination of top and bottom ball bearing guides means the bit follows a template accurately from either face of the workpiece, giving woodworkers flexibility in how they set up pattern routing and flush trimming operations without repositioning the template.
- Reversible insert knives with two usable cutting sides mean you get more cuts per knife before replacement is needed - a direct reduction in tooling cost for shops that do regular flush trimming or template routing work in hardwood, laminate, or MDF.
- At 3/4 in. diameter and 1 3/16 in. cutting height, this bit covers a practical range of edge and pattern trimming depths suitable for cabinet doors, countertop laminates, solid wood panels, and template-guided profiling tasks.
- The Torx fastening system and insert knife design mean knives can be rotated or replaced in the shop without sending the bit body out for regrinding, keeping the tool in service and reducing turnaround time between jobs.
Specifications
- Manufacturer Part Number: 657.692.11B
- Brand: CMT Orange Tools
- Cutting Diameter: 3/4 in.
- Cutting Height: 1 3/16 in.
- Total Length: 1 35/64 in.
- Shank Diameter: 1/2 in.
- Number of Knives: 2
- Material: HW (Tungsten Carbide)
- Rotation: Right-Hand
Approved Applications
- Flush Trimming
- Pattern Routing
- Template Routing
- Finishing Operations
- Hardwood
- Softwood
- Plywood
- MDF
- Chipboard
- Laminates
- Plastics
Frequently Asked Questions
What is the difference between the top and bottom ball bearings on this bit?
This pattern/flush trim bit is equipped with both a top and a bottom ball bearing guide. The dual bearing setup allows the bit to follow a template whether the template is positioned above or below the workpiece, providing added stability and control during flush and finishing operations compared to a single-bearing design.
Can the insert knives on the CMT 657.692.11B be replaced or flipped without replacing the whole bit?
Yes. The insert knives are reversible - each knife is sharpened on both sides, so when one cutting edge becomes dull, the knife can be flipped to use the second side. The knives are secured by Torx screws and can be rotated or replaced in the shop, keeping the bit body in service without requiring the entire tool to be discarded.
What shank size does this router bit require, and which machines are compatible?
The CMT 657.692.11B has a 1/2 in. shank diameter. It is compatible with handheld routers fitted with a 1/2 in. collet and router tables equipped to accept a 1/2 in. shank bit.
What cutting diameter and cutting height does this bit provide?
This bit has a cutting diameter of 3/4 in. and a cutting height of 1 3/16 in., with a total overall length of 1 35/64 in. These dimensions make it well suited for flush trimming edges on cabinet components, laminate panels, solid wood, MDF, and similar materials in the typical thickness range encountered in woodworking and cabinetry.
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