Product Description
CMT Rail and Stile Router Bit Set - 1 7/8" Diameter x 1 3/4" Cutting Height, 1/2" Shank by CMT is a 2-piece carbide-tipped router bit set engineered for craftsmen who need to produce tongue-and-groove joints, entry doors, and passage doors with precision and efficiency. Designed for use on router tables, handheld routers, and compatible routing equipment, this set delivers the profile accuracy and cutting durability required for demanding door-making and cabinet joinery work.
Key Features
- 2-piece set with dedicated rail and stile geometry - one bit creates long, beefy tenons (also compatible with bit 800.628.11 for extended tenon work) and the other produces the decorating profile, giving you a complete door-frame jointing solution in a single set
- 1 7/8" cutting diameter with 1 3/4" cutting height - provides generous material engagement for full-profile passes on door stock up to 5/8" maximum thickness, reducing the need for multiple passes
- 5/16" radius profile - delivers a consistent, repeatable decorative edge that matches standard door frame proportions without custom grinding or setup
- 1/2" shank - fits standard router table and handheld router collets, providing rigid tool holding that minimizes vibration and chatter during heavy door-frame cuts
- 2-tooth HW (hardwood carbide) construction - optimized carbide geometry maintains sharp edges through extended use in solid hardwood and other demanding materials, reducing sharpening frequency
- Right-hand rotation (RH) - matches conventional router spindle direction, allowing straightforward installation and operation without special adapters
- 4" total length - sufficient bit length to handle typical door stock thicknesses while maintaining tool stability in the collet
Why This Product
- Purpose-built for entry and passage door construction - the two-bit system divides tenon forming and profile decoration into separate, optimized operations, making it practical to build consistent, professional-grade doors without custom tooling
- Handles material up to 5/8" thick - covers the standard thickness range for interior and exterior door frames in solid hardwood, giving cabinetmakers and door builders the capacity they need without requiring oversized tooling
- Compatible with bit 800.628.11 for extended tenon production - the rail bit in this set pairs directly with a dedicated tenon-forming bit, expanding the range of joint profiles you can produce on the same setup
- HW carbide material with 2-tooth configuration - the carbide grade and tooth count are matched to the cutting demands of rail-and-stile joinery, balancing cutting speed and edge longevity across solid wood door-making applications
Specifications
- Manufacturer Part Number: 855.806.11
- Brand: CMT Orange Tools
- Diameter: 1 7/8"
- Small Diameter: 44.5mm
- Cutting Height: 1 3/4"
- Cutting Height (I1): 1 3/8"
- Total Length: 4"
- Radius: 5/16"
- Maximum Thickness: 5/8"
- Shank: 1/2"
- Number of Teeth: 2
- Blade Material: HW (Carbide-Tipped)
- Rotation: Right-Hand (RH)
- Product Type: Rail and Stile Router Bit Set
Approved Applications
- Entry door construction with tongue-and-groove joints
- Passage door frame rail and stile joinery
- Cabinet door making
- Decorative profile routing on door stiles and rails
- Long tenon production when paired with bit 800.628.11
Frequently Asked Questions
What does each bit in this 2-piece set do?
This set includes two bits with distinct functions. The rail bit - when used in combination with bit 800.628.11 - is designed for producing long, beefy tenons on door rails. The stile bit creates the decorating profile on the mating stile pieces. Together they produce a complete tongue-and-groove joint for entry and passage door construction.
What is the maximum material thickness this set can handle?
The CMT 855.806.11 is rated for a maximum material thickness of 5/8". This covers standard door frame stock thicknesses used in typical interior and exterior door construction applications.
What shank size is required, and what machines are compatible?
This router bit set uses a 1/2" shank, which fits routers and router tables equipped with 1/2" collets. The right-hand (RH) rotation is compatible with conventional router spindle direction, requiring no special adapters for standard setups.
Can this bit set be used with another CMT bit for extended tenon work?
Yes. The rail bit in this set is specifically noted as compatible with CMT bit 800.628.11. Using these two bits together allows for the production of longer, more substantial tenons, which is useful for heavy-duty entry door joinery requiring extra joint strength.
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