Product Description
The CMT Contractor Mortising Bit - 3/4" Diameter with 1/4" Shank is a professional-grade router bit engineered for precise flat-bottom mortise cutting in natural wood and wood composite materials. Featuring hi-density carbide cutting edges and a 2-tooth right-hand rotation design, this bit delivers clean, splinter-free results in hinge mortising, lock pocket routing, and loose-tenon joinery applications. With a 25/32" cutting height and a compact 2" total length, it is well-suited for use in handheld routers, router tables, and CNC routing machines where controlled, accurate slot mortising is required.
Key Features
- Hi-Density Carbide Cutting Edges - provide strong, consistent performance in mortising applications, eliminating splintered edges and rough bottoms for cleaner finished joints.
- 2-Tooth Cutting Geometry - the 2-flute configuration balances chip clearance and cutting speed, reducing heat buildup and producing smoother mortise walls and flat bottoms in a single pass.
- 3/4" Cutting Diameter with 25/32" Cutting Height - delivers a wide, deep mortise profile in one setup, saving time when routing hinge recesses, lock pockets, or loose-tenon slots.
- 1/4" Shank Diameter - fits a wide range of standard handheld routers and router tables with 1/4" collets, making this bit a versatile addition to any woodworking shop.
- Right-Hand Rotation - compatible with conventional router operation, ensuring predictable feed direction and reliable cutting performance on every pass.
- Hardwood (HW) Grade Carbide Material - works well on both natural wood and wood composites, maintaining edge sharpness longer when routing demanding materials such as plywood, MDF, or laminates.
Why This Product
- Designed specifically for mortising work - the flat-bottom cutting geometry and 25/32" cutting height make it purpose-built for hinge mortising, lock pockets, and loose-tenon joinery where a clean, level floor is critical to a proper fit.
- Versatile material compatibility - the hi-density carbide construction performs reliably across natural wood and wood composites, so woodworkers do not need a separate bit for solid hardwood versus sheet goods like MDF or plywood.
- Fits common router setups - the 1/4" shank is a standard collet size found on most handheld routers and router tables, meaning this bit is ready to use without adapters or specialized equipment.
- Clean results with reduced tearout - the carbide cutting edges are specifically noted to eliminate splintered edges and rough bottoms, which reduces sanding and cleanup time after routing hinge or lock mortises.
Specifications
- Manufacturer Part Number: 80107
- Brand: CMT Orange Tools
- Diameter: 3/4"
- Cutting Height: 25/32"
- Total Length: 2"
- Shank: 1/4"
- Number of Teeth: 2
- Material: Carbide (HW)
- Rotation: Right-hand (RH)
- Product Type: Mortising Bit
Approved Applications
- Mortise Routing
- Slot Mortising
- Hinge Mortising
- Lock Pocket Routing
- Loose-Tenon Joinery
- Natural Wood - Solid Hardwood and Softwood
- Wood Composites - Plywood, MDF, Chipboard
Frequently Asked Questions
What types of materials can this mortising bit cut?
This bit is designed to work well on both natural wood - including solid hardwood and softwood - and wood composites such as plywood, MDF, and chipboard. The hi-density carbide cutting edges maintain sharpness across these material types, making it a practical choice for a range of mortising tasks in the woodworking shop.
What router collet size is required to use this bit?
This bit has a 1/4" shank diameter, which is one of the most common collet sizes on handheld routers and router tables. It is compatible with any router equipped with a 1/4" collet - no adapters are needed for standard router setups.
How deep a mortise can this bit cut in a single pass?
The cutting height of this bit is 25/32", which represents the maximum usable depth of cut in a single pass. For hinge mortising and lock pocket routing at standard depths, this cutting height is typically sufficient to complete the slot without repositioning the bit.
Can this bit be used in a CNC routing machine as well as a handheld router?
Yes. With its 1/4" shank and right-hand rotation, this bit is compatible with handheld routers, router tables, and CNC routing machines that accept 1/4" tooling. The consistent carbide geometry makes it suitable for repeatable, programmed mortising passes on a CNC setup.
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