CMT Slot Cutter 1-7/8" x 5/32" - Bore: 8mm, 3-Tooth by CMT is a precision-engineered routing accessory designed for cutting clean, consistent slots in wood, panel products, and synthetic materials. With a 1 7/8" cutting diameter, 5/32" kerf thickness, and a 12.7mm cutting depth, this compact 3-tooth cutter is purpose-built for spline grooves, biscuit slots, T-molding channels, and panel joinery applications. Mounted on an 8mm shank with a matching 8mm bore, it pairs with a compatible slot cutter arbor for use on handheld routers, router tables, and CNC routing machines.

Key Features

• Carbide-Tipped (HW) Cutting Teeth - hard-metal carbide tips deliver long cutting life and maintain a sharp edge through repeated use in hardwood, softwood, MDF, plywood, and laminates, reducing the need for frequent tool changes.
• 3-Tooth Configuration - the tri-tooth design balances material removal with a smooth cut finish, making it effective for both production runs and detail joinery work where clean slot walls matter.
• 5/32" Teeth Thickness - produces a precisely sized kerf that matches standard spline and T-molding dimensions, ensuring tight-fitting joints without secondary sizing passes.
• 12.7mm Cutting Depth - provides sufficient slot penetration for biscuit joinery, spline routing, and panel connector applications without requiring multiple passes in most common stock thicknesses.
• 8mm Bore and 8mm Shank - consistent bore-to-shank sizing allows direct mounting on compatible 8mm arbors, reducing setup time and keeping the tool centered for accurate, repeatable slot positioning.
• Right-Hand (RH) Rotation - designed for standard right-hand router operation, ensuring compatibility with conventional handheld routers, router tables, and CNC spindles without any modification.
• Anti-Kickback Design - limits the depth of cut the cutter can take in a single bite, reducing the risk of grabbing or sudden kickback events during freehand and table-mounted routing.
• CMT Orange Shield Non-Stick Coating - protects the blade body from pitch, resin, and moisture buildup, keeps the cutter running cooler, guards against corrosion, and helps extend the working life of the tool.
• SinterHIP Industrial Chrome Carbide - carbide processed through Hot Isostatic Pressing resists micro-fractures and material failure under load, translating to a longer cutting edge life even in demanding production environments.
• Tri-Metal Brazing (Silver-Copper-Silver) - this three-layer brazing method creates a stronger bond between the carbide tip and the blade body, reducing the risk of tip failure when cutting harder composites or dense hardwoods.

Why This Product

• The 5/32" kerf and 12.7mm cutting depth are matched to common biscuit slot and T-molding standards, so joints fit properly the first time - no shimming, no re-routing, and no guesswork on slot sizing.
• The anti-kickback geometry and right-hand rotation design make this cutter appropriate for both handheld router use and fixed router table or CNC setups, giving woodworkers flexibility across different workflows.
• CMT's Orange Shield coating combined with SinterHIP carbide processing means the cutting edge holds up longer in pitch-heavy woods and laminate materials, lowering the cost per cut over the life of the tool.
• The 8mm bore matches the 8mm shank for straightforward arbor compatibility, simplifying tool selection when outfitting a slot cutter setup for panel joinery, spline work, or T-molding installation.

Specifications

• Manufacturer Part Number: 822.340.11
• Brand: CMT Orange Tools
• Diameter: 1-7/8"
• Bore Diameter: 8mm
• Shank: 8mm
• Cutting Depth: 12.7mm
• Teeth Thickness: 5/32"
• Plate Thickness: 0.083"
• Number of Teeth: 3
• Blade Material: HW (Carbide-Tipped)
• Rotation: Right-Hand (RH)
• Product Type: Slot Cutter

Approved Applications

• Biscuit Slot Cutting
• Spline Groove Routing
• T-Molding and H-Slot Cutting
• Panel Joinery
• Solid Hardwood and Softwood
• Plywood and MDF
• Chipboard and Laminates
• Melamine and Plastic