Product Description
CMT Rabbeting Bit with Insert Knives - 1-3/8" Diameter, 15/32" Cutting Height, 1/4" Shank is a precision router bit from CMT designed for cutting clean, consistent rabbets in hardwood, chipboard, and MDF. Featuring two replaceable insert knives secured by special Torx screws, this right-hand rotation bit delivers professional results when used in portable routers, making it a reliable tool for cabinet door making, drawer front fabrication, and general rabbeting work.
Key Features
- Two replaceable insert knives fixed by special Torx screws - knives can be swapped out when worn rather than replacing the entire bit, reducing long-term tooling costs and downtime.
- Knives sharpened on all 4 sides - each knife offers multiple usable cutting edges, increasing the working life of every insert and improving efficiency when routing board materials like chipboard and MDF.
- 1-3/8" cutting diameter with 15/32" cutting height - produces a 1/2" deep rabbet in a single pass, suitable for inset door and drawer front construction in hardwood or engineered wood panels.
- 1/4" shank diameter - fits compact and standard portable routers equipped with a 1/4" collet, offering versatility for job-site and workshop use.
- Right-hand rotation - compatible with standard router configurations, ensuring predictable chip ejection and smooth feed direction during routing operations.
- HW (carbide) insert knife material - hard-wearing carbide edges stay sharp longer when cutting abrasive materials such as MDF, chipboard, and dense hardwoods, reducing the frequency of knife changes.
- 2-1/8" overall length - compact profile allows the bit to be used in a wide range of portable router setups without excessive overhang from the collet.
Why This Product
- The four-sided insert knives mean fewer tool changes and less material waste - when one cutting edge dulls, simply index to the next side rather than stopping work to source a replacement bit.
- Designed specifically for chipboard, hardwood, and MDF, this rabbeting bit handles the full range of cabinet and furniture panel materials in a single tool, from solid wood face frames to engineered panel components.
- The Torx-screw insert retention system holds each knife securely during routing, reducing the risk of knife movement or chatter that can compromise rabbet quality in demanding hardwood applications.
- With a 1/2" rabbet depth and 1-3/8" diameter, this bit produces the precise, consistent shoulder profiles needed for inset cabinet doors and drawer fronts without requiring multiple passes or setup changes.
Specifications
- Manufacturer Part Number: 660.351.11
- Brand: CMT Orange Tools
- Cutting Diameter: 1-3/8"
- Cutting Depth: 12.7mm
- Cutting Height: 15/32"
- Total Length: 2-1/8"
- Shank Diameter: 1/4"
- Number of Teeth: 2
- Material: HW
- Rotation: RH
Approved Applications
- Rabbeting in hardwood, chipboard, and MDF
- Cabinet door making - inset door construction
- Drawer front fabrication
- General rabbeting on board materials with portable routers
Frequently Asked Questions
How many usable cutting edges does each insert knife have?
Each insert knife is sharpened on all 4 sides, giving you four usable cutting edges per knife before the insert needs to be replaced. With 2 knives included, the bit provides a total of 8 cutting edges, which significantly extends the productive life of the tooling between replacements.
What materials can this rabbeting bit be used on?
According to the product data, this bit is designed for use on chipboards, hardwood, and MDF. The carbide (HW) insert knives are well suited to the abrasive properties of engineered wood panels as well as dense solid woods.
What type of router is this bit compatible with?
This bit is designed for use on portable routers. It has a 1/4" shank diameter, so it requires a router equipped with a 1/4" collet. Right-hand rotation matches the standard spindle direction of most portable routers.
How are the insert knives held in place during routing?
The two replaceable insert knives are fixed by special Torx screws. This fastening method secures each knife firmly in position during operation and also makes knife indexing or replacement straightforward when a cutting edge becomes worn.
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