CMT 822.320.11A Slot Cutter by CMT is a precision-ground, carbide-tipped cutting blade engineered for routing clean, accurate slots and grooves in a wide range of wood and composite materials. With a 1 7/8" diameter, 5/64" teeth thickness, and a 1/4" shank, this three-wing cutter is purpose-built for handheld routers, router tables, and CNC routing machines. Whether you are cutting biscuit slots, spline grooves, T-molding channels, or tongue and groove joints, this slot cutter delivers consistent, repeatable results with minimal material tearout. The anti-kickback design and industrial micrograin carbide tips make it a reliable choice for both production woodworking and one-off joinery tasks.

Key Features

• CMT Orange Shield Non-Stick Coating - the proprietary PTFE coating prevents pitch and resin buildup on the blade surface, reduces heat generation during cutting, guards against corrosion, and extends overall tool life so you spend less time cleaning and more time cutting.
• Micrograin Carbide Tips (HW Material) - industrial-grade micrograin carbide provides a harder, denser cutting edge than standard carbide, translating to longer edge retention, cleaner slot walls, and reduced frequency of resharpening.
• Anti-Kickback Design - engineered geometry limits the amount of material the cutter can engage per pass, reducing the risk of sudden kickback and improving operator safety during handheld and table-mounted routing operations.
• Three-Wing Configuration (3 Teeth) - three evenly spaced cutting wings distribute cutting load and deliver a smooth, balanced cut, minimizing vibration and producing consistently clean slot edges in hardwood, softwood, plywood, MDF, and laminates.
• Right-Hand Rotation - standard RH rotation ensures compatibility with conventional routers and router table setups without requiring any special tooling or adapters.
• 1/4" Shank - the 1/4" shank fits a wide variety of router collets, making this cutter easy to integrate into existing tool setups without adapters.
• Plate Thickness of 0.051" - the precise 0.051" plate thickness enables consistently dimensioned slots that mate properly with standard biscuits, splines, and T-molding profiles.
• Cutting Depth of 12.7mm - up to 12.7mm of usable cutting depth gives you sufficient reach for most panel joinery and groove-routing applications without repositioning the workpiece.

Why This Product

• The anti-kickback geometry combined with micrograin carbide tips makes this cutter well-suited for both experienced woodworkers and production environments where consistent, safe operation across repeated cuts is essential.
• The PTFE non-stick coating actively reduces heat and resin adhesion during routing, which is especially valuable when working with resinous softwoods, MDF, melamine, or plastic - materials known for causing pitch buildup and premature bit dulling.
• At 1 7/8" diameter with a 5/64" kerf, this cutter produces slots sized for standard splines, biscuits, and T-molding profiles, giving woodworkers a single versatile blade that addresses multiple joinery methods without swapping cutters.
• Designed for use with CMT 824 series arbors that accept a 22mm (7/8") bearing, this slot cutter fits into a modular system that lets you adjust cutting depth and bearing size - expanding the range of joinery tasks you can accomplish with one arbor platform.

Specifications

• Manufacturer Part Number: 822.320.11A
• Brand: CMT Orange Tools
• Diameter: 1 7/8"
• Cutting Depth: 12.7mm
• Teeth Thickness: 5/64"
• Plate Thickness: 0.051"
• Total Length: 2 13/32"
• Shank: 1/4"
• Number of Teeth: 3
• Material: HW (Micrograin Carbide)
• Rotation: Right-Hand (RH)
• Product Type: Slot Cutter

Approved Applications

• Biscuit slot cutting (use with 4mm cutting length for biscuit joints)
• Spline groove routing
• T-molding channel cutting
• Tongue and groove joint routing
• Panel joinery and edge slotting
• H-slot and custom groove profiles