Product Description
CMT Mortising Bit with Bearing - 1/2" Diameter, 3/4" Cutting Height, 1/4" Shank is a precision carbide-tipped router bit engineered for clean, flat-bottom mortise cuts in solid wood, plywood, MDF, and wood composites. Designed by CMT for hinge mortising, lock pocket routing, and template-guided sign making, this 2-flute bit pairs a negative shear angle geometry with a top-mounted bearing guide to deliver splinter-free edges and smooth mortise floors on every pass. Whether you are routing hinge recesses on cabinet doors or performing repeatable template work, this mortising bit brings professional results to handheld routers, router tables, and CNC routing machines alike.
Key Features
- Thick Carbide Tips (HW Material): Industrial-grade tungsten carbide cutting edges stay sharp longer through hardwood, softwood, plywood, laminates, melamine, and plastic - reducing downtime spent on bit changes.
- Negative Shear Angle Design: Pulls cutting forces downward into the workpiece, eliminating splintering and producing clean, crisp mortise edges on both natural wood and engineered wood composites.
- Flat-Bottom Mortise Performance: Delivers smooth mortise floors with no rough bottoms, so hinges, locks, and tenon joints seat flush without additional cleanup work.
- Top Bearing Guide: The included top-mounted bearing follows template edges precisely, making this bit equally well-suited for sign making, pattern routing, and repeatable hinge mortise production.
- 2-Flute Right-Hand Rotation: Dual cutting edges provide balanced chip evacuation and consistent surface quality, reducing vibration and improving finish on each mortise pass.
- 1/4" Shank: Fits a wide range of compact and standard routers, making this bit accessible for both job-site handheld routing and dedicated router table setups.
Why This Product
- The negative shear angle geometry actively prevents tear-out and splintering, which means hinge mortises and lock pockets come out clean the first time - no sanding, chiseling, or secondary cleanup required.
- The top bearing guide transforms this bit into a template-following tool, allowing woodworkers and sign makers to reproduce identical mortise profiles repeatedly with no layout marks or freehand guesswork.
- At 1/2" diameter with a 3/4" cutting height, this bit covers the proportions needed for standard residential hinge mortising and loose-tenon joinery in a single pass on most workpiece thicknesses.
- Thick carbide tips processed to HW material standards hold a sharp edge through demanding cuts in hardwood, MDF, chipboard, and plastic - making this bit a durable choice for shops that regularly mill a variety of materials.
Specifications
- Manufacturer Part Number: 801.127.11B
- Brand: CMT Orange Tools
- Product Type: Mortising Bit with Bearing
- Diameter: 1/2"
- Cutting Height: 3/4"
- Total Length: 2 9/64"
- Shank: 1/4"
- Number of Flutes: 2
- Blade Material: Carbide-Tipped (HW)
- Rotation: Right-Hand (RH)
Approved Applications
- Hinge Mortising
- Lock Pocket Routing
- Slot Mortising
- Loose-Tenon Joinery
- Template and Pattern Routing
- Sign Making
Frequently Asked Questions
What router types are compatible with this mortising bit?
This bit is compatible with handheld routers, router tables, and CNC routing machines that accept a 1/4" shank collet. The 1/4" shank fits a wide range of compact and full-size routers commonly used in woodworking and cabinetry.
What materials can this bit cut cleanly?
The CMT mortising bit is designed to perform in solid hardwood, softwood, plywood, MDF, chipboard, laminates, melamine, and plastic. The thick carbide tips and negative shear angle design handle both natural wood and engineered wood composites without producing splintered edges or rough mortise floors.
How does the top bearing guide work, and when should I use it?
The top-mounted bearing rolls along the edge of a template or guide, limiting lateral movement and allowing the bit to follow a precise path. This makes the bearing guide especially useful for sign making, pattern routing, and production hinge mortising where consistent, repeatable results are required across multiple workpieces.
What is the maximum mortise depth this bit can cut in a single pass?
The cutting height of this bit is 3/4", which represents the maximum depth of cut available in a single pass. For mortises shallower than 3/4", router depth adjustments on your machine control the actual cut depth.
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