CMT 822.332.11A Slot Cutter by CMT is a precision three-wing carbide-tipped router bit designed to cut clean, accurate slots and grooves for a wide range of joinery applications. With a 1 7/8 in. diameter, 1/8 in. teeth thickness, and a 1/4 in. shank, this slot cutter blade is engineered for use with CMT 824 series arbors and delivers a cutting depth of up to 12.7mm (1/2 in.). Whether you are routing spline grooves, biscuit slots, T-molding channels, or tongue and groove joints, this blade provides the precision and durability professional woodworkers demand. The CMT orange non-stick PTFE coating, anti-kickback design, and micrograin carbide tips make this cutter a reliable choice for handheld routers, router tables, and CNC routing machines alike.

Key Features

• CMT Orange Shield Non-Stick PTFE Coating - prevents pitch and resin buildup on the blade surface, reduces friction-related heat, protects against corrosion, and extends the working life of the cutter between sharpenings.
• Micrograin Carbide Tips (HW Material) - a denser, harder carbide formulation that holds a sharper cutting edge longer, meaning fewer interruptions for blade changes and consistently cleaner slot cuts across hardwoods, softwoods, MDF, plywood, and laminates.
• Anti-Kickback Design - limits the amount of material the bit can remove in a single pass, reducing the risk of dangerous kickback events and giving operators greater control, especially on handheld routers and router tables.
• Three-Wing Geometry (3 Teeth) - three cutting flutes distribute the cutting load evenly, producing smoother slot walls and reducing vibration compared to single- or two-flute designs.
• 1/4 in. Shank - compatible with a wide range of standard router collets on handheld routers, router tables, and CNC machines, making this blade easy to integrate into existing setups.
• 0.051 in. Plate Thickness - a precise, consistent kerf width that ensures tight-fitting splines, biscuits, and T-molding inserts without excessive play or gap.
• Right-Hand Rotation (RH) - matches the standard rotation direction of virtually all routers, so no special tooling or collet adapters are required for everyday use.
• 1 7/8 in. Cutting Diameter - sized to work with CMT 824 series arbors that include a 22mm (7/8 in.) bearing, enabling a cutting depth of up to 12.7mm (1/2 in.) for deep, confident slot routing.

Why This Product

• The anti-kickback body geometry and micrograin carbide tips work together to make slot cutting safer and more precise - ideal for woodworkers who need repeatable results when cutting biscuit slots, spline grooves, or T-molding channels across a variety of panel and solid wood materials.
• The orange PTFE non-stick coating actively reduces heat and resin adhesion during cuts through sticky or resinous woods, MDF, melamine, and plastic - keeping the blade performing cleanly through longer production runs without frequent cleaning stops.
• With uses described as "almost infinite" for slot and groove work, this three-wing cutter handles spline joints, biscuit joints, T-molding installation, and tongue and groove joinery in a single versatile blade - reducing the number of specialty bits needed in a shop.
• Designed to pair directly with CMT 824 series arbors, this blade fits into a modular system that lets you change cutting depths and profiles by swapping arbors rather than purchasing entirely new bits - a cost-effective approach for shops with varied joinery requirements.

Specifications

• Manufacturer Part Number: 822.332.11A
• Brand: CMT Orange Tools
• Diameter: 1 7/8 in.
• Cutting Depth: 12.7mm
• Teeth Thickness: 1/8 in.
• Total Length: 2 13/32 in.
• Plate Thickness: 0.051 in.
• Shank: 1/4 in.
• Number of Teeth: 3
• Blade Material: HW (Micrograin Carbide)
• Rotation: Right-Hand (RH)
• Product Type: Slot Cutter

Approved Applications

• Slot and groove cutting for spline joints
• Biscuit slot routing (use with 4mm / 5/32 in. cutting length for biscuit joints)
• T-molding channel cutting
• Tongue and groove joinery
• Panel joinery in solid hardwood, softwood, plywood, MDF, chipboard, laminates, melamine, and plastic