CMT Tongue and Groove Set - 1-7/8" Diameter x 3/4" Cutting Height, 1/2" Shank (Profile A+B) is a two-bit router set engineered by CMT for creating precise tongue and groove joints in solid wood and sheet materials up to 3/4" thickness. Rather than reconfiguring a single combination bit, this set gives you a dedicated Profile A bit to mill the groove slot and a separate Profile B bit to cut the mating tongue - so you move straight from one operation to the next without stopping to disassemble and reassemble tooling. Constructed with industrial-grade tungsten carbide tips and CMT's signature orange anti-corrosion coating, this tongue and groove router bit set is well suited for cabinetmaking, furniture building, flooring, paneling, and other woodworking joinery applications.

Key Features

• Dedicated Profile A and Profile B Bits - one bit cuts the groove, the other mills the tongue, eliminating time lost taking apart and reassembling combination tooling mid-workflow.
• Works on Stock Up to 3/4" Thickness - the 3/4" cutting height (19.05mm) matches standard dimensional lumber and sheet goods, so you can joint full-thickness panels without additional setup.
• HW (Tungsten Carbide) Cutting Material - hard-metal carbide tips stay sharp longer when routing solid hardwood, softwood, plywood, MDF, and composite sheet materials, reducing the frequency of resharpening.
• CMT Orange Shield Non-Stick Coating - prevents bit overheating, reduces pitch and resin buildup on the flutes, and protects the body against corrosion, extending the working life of each bit in the set.
• SinterHIP Industrial Chrome Carbide - carbide processed via Hot Isostatic Pressing (HIP) prevents material failure under heavy cutting loads and extends cutting life compared to conventionally sintered grades.
• Tri-Metal Brazing - Silver-Copper-Silver brazing bonds the carbide tip to the body, protecting the joint when routing harder wood or composites and reducing the risk of tip separation.
• Anti-Kickback Design - limits depth of cut per pass and minimizes kickback, improving control and safety at the router table or with a handheld router.
• Right-Hand Rotation, 1/2" Shank - fits all standard 1/2" router collets; right-hand rotation is compatible with handheld routers, router tables, and CNC routing machines.
• 3 Cutting Teeth per Bit - three-tooth geometry distributes cutting load evenly, producing smooth joint surfaces that require minimal sanding before assembly.

Why This Product

• Two separate bits - one for the tongue, one for the groove - means you never have to reconfigure a single bit mid-project. Set up each bit once in your router and move directly from grooving to tongue-milling, saving significant setup time on production or batch runs.
• The 3/4" cutting height matches the full thickness of standard lumber and common sheet goods, so panels, cabinet sides, and flooring boards can be jointed in a single pass without shimming or multiple-height adjustments.
• CMT's Orange Shield coating actively resists resin and pitch accumulation - an important advantage when routing resinous softwoods or laminates where buildup quickly degrades cut quality and shortens bit life.
• The 1/2" shank provides maximum rigidity and reduces vibration compared to smaller-diameter shanks, which translates directly to tighter-fitting tongue and groove joints and cleaner mating surfaces.

Specifications

• Manufacturer Part Number: 800.626.11
• Brand: CMT Orange Tools
• Diameter: 1-7/8"
• Cutting Depth: 12.7mm
• Cutting Height: 3/4"
• Total Length: 2-51/64"
• Shank: 1/2"
• Number of Teeth: 3
• Material: HW (Tungsten Carbide)
• Profile: A+B
• Rotation: Right-Hand (RH)
• Product Type: Router Bit Set

Approved Applications

• Tongue and groove joinery in solid hardwood and softwood
• Solid wood paneling and wall paneling
• Cabinet construction and cabinet door frames
• Flooring and subfloor panel joinery
• Furniture making and box construction
• Plywood, MDF, chipboard, and composite sheet panel joinery

What's Included

• 1x Tongue and Groove Profile A Router Bit (1/2" shank)
• 1x Tongue and Groove Profile B Router Bit (1/2" shank)