CMT Solid Carbide Upcut Spiral Router Bit - 1/8" Diameter is a precision-ground single-flute spiral cutting tool engineered from a special super-micrograin carbide formulation designed to produce and hold a keen cutting edge. Built for CNC routing machines, router tables, and handheld routers, this upcut spiral bit shears wood cleanly while ejecting chips upward for efficient chip clearing - keeping the cut path clean and the bit running cooler throughout extended operations. With a 1/4" shank and 2" total length, it handles fine detail routing, panel sizing, copying work, and deep pocket cutting in solid wood, wood composites, plastic materials, and laminates.

Key Features

• Super-micrograin carbide construction - the entire bit is manufactured from a special super-micrograin carbide formulation that produces and holds a keen cutting edge, delivering superior wear resistance and allowing more resharpenings over the life of the tool compared to carbide-tipped alternatives.
• Low-angle upcut spiral geometry - designed specifically to shear wood cleanly and provide efficient chip ejection, the upcut spiral pulls chips up and out of the cut, reducing heat buildup and keeping edges sharper for longer during routing operations.
• Single-flute (1-tooth) design - the single cutting edge maximizes chip clearance in each rotation, making this bit especially effective for routing plastics, soft composites, and laminates where chip packing can cause heat damage.
• Right-hand rotation - compatible with standard CNC spindles, router tables, and handheld routers, ensuring broad machine compatibility without special setup requirements.
• 1/4" shank diameter - fits the most widely available router collets, offering a secure, vibration-resistant grip during high-speed spiral routing passes.
• Runs cooler during cutting - the combination of low-angle spiral geometry and efficient chip evacuation reduces friction and heat at the cutting edge, protecting both the bit and the workpiece surface.

Why This Product

• For CNC operators and woodworkers who need clean, tear-out-free cuts in solid wood or wood composites, the low-angle spiral geometry shears fibers rather than tearing them, producing smoother edges with less post-processing cleanup.
• The 1/8" cutting diameter makes this bit an ideal choice for fine detail routing, narrow channel cutting, and precision panel sizing where larger bits simply cannot fit - without sacrificing the durability that full solid carbide construction provides.
• Routing plastics and laminates requires a bit that clears chips quickly to prevent melting and re-welding - the upcut spiral design and single-flute configuration address this challenge directly by maximizing chip evacuation on every revolution.
• The super-micrograin carbide formulation extends tool life and supports multiple resharpenings, reducing long-term tooling cost for shops that run high-volume cutting cycles on solid wood, MDF, chipboard, or plastic materials.

Specifications

• Manufacturer Part Number: 198.001.11
• Brand: CMT Orange Tools
• Product Type: Solid Carbide Upcut Spiral Bit
• Diameter: 1/8"
• Cutting Height: 1/2"
• Total Length: 2"
• Shank Diameter: 1/4"
• Number of Teeth: 1
• Rotation: Right-hand (RH)
• Material: Solid Carbide (HWM super-micrograin formulation)
• Macro Class: Router Cutter

Approved Applications

• CNC routing and high-speed spindle routing
• Cutting and copying operations on solid wood
• Panel sizing in wood composites and laminates
• Deep pocket routing in MDF and chipboard
• Routing plastic materials and melamine surfaces
• Chip evacuation routing where heat control is critical
• Fine detail routing requiring a narrow 1/8" cutting path