The CMT Solid Carbide Upcut Spiral Bit - 3/8 in. is a precision-ground routing tool engineered for clean, efficient material removal across a wide range of woodworking and fabrication applications. Manufactured from a special super-micrograin carbide formulation, this single-flute upcut spiral router bit delivers a keen cutting edge that holds up through demanding CNC routing, panel sizing, copying, and deep-pocket operations. The low-angle spiral geometry shears wood cleanly while ejecting chips upward, reducing heat buildup at the cutting zone and extending edge life - making it a dependable choice for routing solid wood, wood composites, plastic materials, and laminates alike.

Key Features

• Super-micrograin solid carbide construction - the entire bit is manufactured from a specially formulated micrograin carbide, producing and holding a keener cutting edge than standard carbide grades, which translates to longer run times between sharpenings and more consistent cut quality throughout the tool's life.
• Low-angle upcut spiral design - engineered specifically to shear wood cleanly rather than tear it, the upcut geometry ejects chips upward and out of the cut path, keeping the flute clear and allowing the tool to run cooler during extended routing sessions.
• Single-flute (1-tooth) configuration - provides generous chip clearance per revolution, making this bit particularly effective for deep pocket routing and aggressive material removal where chip accumulation can cause burning or binding.
• 3/8 in. shank and 3/8 in. cutting diameter - the matched shank-to-cutting-diameter ratio ensures a secure, concentric grip in standard collets, reducing vibration and contributing to cleaner, more accurate cuts.
• 1-1/8 in. cutting height with 3 in. total length - provides sufficient reach for panel sizing, template copying, and routing applications that require meaningful depth of cut, while maintaining overall rigidity for accurate results.
• Right-hand rotation (RH) - compatible with standard CNC spindles, router tables, and handheld routers without any special toolholder requirements.
• Broad material compatibility - performs on solid wood, wood composites, plastic materials, and laminates, reducing the need to swap bits between different workpiece materials on the shop floor.

Why This Product

• The super-micrograin carbide formulation is designed to hold a sharper edge longer than conventional carbide - meaning fewer tool changes and less downtime during production runs on solid hardwoods, softwoods, plywood, MDF, and plastics.
• The low-angle spiral geometry was developed specifically for efficient chip ejection, so routers and CNC spindles run cooler and cut edges resist premature dulling - a practical advantage in continuous-duty routing environments.
• With a 3/8 in. diameter matched to a 3/8 in. shank, this bit fits a wide variety of standard router collets without adapters, making it straightforward to deploy on CNC routing machines, router tables, and handheld routers alike.
• Covering cutting, copying, panel sizing, and general routing in a single tool - across solid wood, composites, laminates, and plastics - this upcut spiral bit reduces the number of specialty bits needed for a diverse workload.

Specifications

• Manufacturer Part Number: 198.504.11
• Brand: CMT Orange Tools
• Product Type: Solid Carbide Upcut Spiral Bit
• Cutting Diameter: 3/8 in.
• Cutting Height: 1-1/8 in.
• Total Length: 3 in.
• Shank Diameter: 3/8 in.
• Number of Teeth: 1
• Rotation: Right-hand (RH)
• Material: Solid Carbide (HWM super-micrograin formulation)

Approved Applications

• Cutting and general routing operations
• Copying and template routing
• Panel sizing
• Deep pocket routing
• CNC routing machine operations
• Router table and handheld router use
• Routing solid wood and wood composites
• Routing plastic materials and laminates