CMT Slot Cutter 1-7/8" x 5/32" with 1/4" Shank and 3-Tooth Carbide Blade is a precision-engineered routing accessory designed for cutting clean, consistent slots and grooves in wood, composite panels, and related materials. Built with micrograin carbide tips and CMT's signature anti-kickback geometry, this slot cutter handles a wide range of joinery tasks including biscuit slot cutting, spline groove routing, tongue and groove joints, and T-molding installation. The 5/32" kerf width and 12.7mm cutting depth make it a reliable choice for biscuit joinery when paired with a compatible CMT 824 series arbor.

Key Features

• Micrograin Carbide Tips (HW Material Grade) - processed for superior hardness and edge retention, so the blade stays sharp longer even through repeated cuts in hardwood, MDF, and composites.
• CMT Orange Shield Non-Stick PTFE Coating - reduces pitch and resin buildup on the blade surface, minimizes heat transfer during cuts, and protects against corrosion, all of which extend the working life of the cutter.
• Anti-Kickback Design - limits the amount of material the cutter can engage in a single pass, reducing the risk of sudden kickback and giving the operator greater control at the router table or handheld router.
• 3-Tooth Configuration with Right-Hand Rotation - delivers smooth, balanced cutting action that reduces vibration and produces cleaner slot walls in a single pass.
• 1/4" Shank Diameter - fits standard 1/4" router collets on handheld routers and router tables, making this cutter compatible with a broad range of common routing setups.
• 5/32" Teeth Thickness with 0.082" Plate Thickness - produces slots sized correctly for biscuit joints when used with the recommended 4mm (5/32") cutting length, ensuring a snug, reliable fit for standard biscuits.
• 12.7mm (approximately 1/2") Cutting Depth via 22mm (7/8") Diameter Bearing Arbor - provides enough slot depth for strong, stable biscuit and spline joints across panel and edge joinery applications.

Why This Product

• The 5/32" kerf width matches the standard requirement for biscuit joinery, making this cutter the correct specification choice for woodworkers cutting #0, #10, or #20 biscuit slots in solid hardwood, plywood, MDF, and melamine panels.
• The anti-kickback geometry combined with the 3-wing carbide design allows precise depth control during slotting operations at the router table or with a handheld router, reducing operator fatigue and improving cut-to-cut consistency on production joinery work.
• Uses for this three-wing slot cutter extend well beyond biscuits - the same blade handles spline grooves, T-molding channels, and tongue and groove joints, reducing the need for multiple dedicated cutters on a typical shop project.
• The PTFE non-stick coating actively resists pitch and resin accumulation during cuts in sticky or resinous materials, keeping cleanup time short and maintaining consistent cutting performance across extended use sessions.

Specifications

• Manufacturer Part Number: 822.340.11A
• Brand: CMT Orange Tools
• Diameter: 1-7/8"
• Cutting Depth: 12.7mm
• Teeth Thickness: 5/32"
• Plate Thickness: 0.082"
• Total Length: 2-13/32"
• Shank: 1/4"
• Number of Teeth: 3
• Blade Material: HW (Micrograin Carbide)
• Rotation: Right-Hand (RH)
• Product Type: Slot Cutter

Approved Applications

• Biscuit slot cutting (use with 5/32" / 4mm cutting length for standard biscuit joints)
• Spline groove routing in solid wood and engineered panels
• T-molding channel cutting
• Tongue and groove joint routing
• Panel joinery and edge joinery in hardwood, softwood, plywood, MDF, chipboard, laminates, and melamine
• Horizontal slot cutting on handheld routers, router tables, and CNC routing machines