CMT 822.316.11A Slot Cutter by CMT is a precision carbide-tipped router bit designed to cut clean, accurate slots and grooves in a wide range of wood and composite materials. With a 1 7/8" cutting diameter, a 1/16" kerf, and a 1/4" shank, this three-wing slot cutter is built for joinery work including spline grooves, T-molding channels, tongue and groove joints, and biscuit slots. The anti-kickback body design, micrograin carbide tips, and CMT's signature non-stick PTFE coating make this bit 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 bit body, reduces heat accumulation during cutting, resists corrosion, and extends tool life across demanding production applications.
• Micrograin Carbide Tips (HW Material Grade) - the dense, fine-grain carbide composition holds a sharper cutting edge longer, delivering cleaner slot walls and fewer passes needed to hit final dimensions in hardwood, softwood, plywood, MDF, chipboard, laminates, melamine, and plastic.
• Anti-Kickback Design - limits the maximum depth of cut per pass, reducing the risk of sudden bit grab or workpiece ejection, which is especially important when slot cutting freehand with a handheld router.
• Three-Wing Cutting Configuration (3 Teeth) - distributes cutting load evenly across three carbide tips for smoother feed, reduced vibration, and a cleaner finished groove compared to single- or two-wing alternatives.
• Right-Hand Rotation - compatible with standard router collets and arbors, including the CMT 824 series arbors that accept a 22mm (7/8") diameter bearing for controlled cutting depth up to 12.7mm (1/2").
• 1/4" Shank - fits compact routers, laminate trimmers, and smaller router table setups, expanding the range of machines that can run this cutter without an adapter.
• 1/16" Kerf Thickness with 0.043" Plate - produces precise, narrow slots suited to biscuit joints, thin splines, and T-molding applications where slot width must be tightly controlled.

Why This Product

• The 1/16" cutting thickness makes this slot cutter a purpose-built choice for applications requiring tight, consistent grooves - including biscuit joinery, thin spline routing, and T-molding installation - where oversized slots would compromise joint fit.
• The anti-kickback geometry combined with the three-wing carbide design means safer, smoother cuts even when working with a handheld router in open-shop conditions, where bit grab presents a greater risk than on a fixed table setup.
• The PTFE non-stick coating keeps the bit cleaner between sharpenings, which matters in high-volume panel joinery work where resin buildup can prematurely degrade cut quality and force unplanned downtime.
• Blade-only format means this cutter pairs directly with a range of CMT 824 series arbors, giving the user flexibility to match bearing diameter and cutting depth to the specific joint or groove application at hand.

Specifications

• Manufacturer Part Number: 822.316.11A
• Brand: CMT Orange Tools
• Diameter: 1 7/8"
• Cutting Depth: 12.7mm
• Teeth Thickness: 1/16"
• Plate Thickness: 0.043"
• Total Length: 2 13/32"
• Shank: 1/4"
• Number of Teeth: 3
• Rotation: Right-Hand (RH)
• Blade Material: HW - Micrograin Carbide
• Product Type: Slot Cutter

Approved Applications

• Biscuit slot cutting (use with 4mm / 5/32" cutting length for biscuit joints)
• Spline groove routing
• T-molding and H-slot channel cutting
• Tongue and groove joint production
• Panel joinery and edge grooves