The CMT 192.001.11 Solid Carbide Downcut Spiral Bit is a precision-engineered 1/8 in. diameter spiral router bit built for clean, tearout-free cuts on the upper surface of your workpiece. Crafted entirely from a special super-micrograin carbide formulation, this downcut spiral bit shears wood cleanly and efficiently - making it a go-to choice for CNC routing, panel sizing, laminate trimming, and fine detail work in solid wood, wood composites, plastic materials, and laminates. Its low-angle downcut spiral geometry presses chips downward during the cut, protecting the top face of veneer, melamine, and laminated panels where surface quality is non-negotiable.

Key Features

• Super-Micrograin Solid Carbide Construction - A special super-micrograin carbide formulation produces and holds a keen cutting edge longer than standard carbide, giving you extended tool life and more usable resharpenings between replacements.
• Downcut Spiral Geometry - The downcut direction presses chips downward into the cut rather than lifting them upward, preventing tearout on the upper face of the workpiece - critical when routing veneer, laminates, melamine, or any material where the top surface finish must be preserved.
• Low-Angle Spiral Design - Engineered specifically to shear wood cleanly and provide efficient chip ejection, this low-angle spiral helps the bit run cooler and keeps cutting edges sharper for a longer service life.
• 2-Flute Configuration - Two cutting teeth deliver a balance of smooth finish quality and efficient material removal, making this bit well suited for both fine detail passes and general routing tasks.
• 1/4 in. Shank with 1/8 in. Cutting Diameter - The sturdy 1/4 in. shank provides secure collet grip in routers and CNC spindles, while the narrow 1/8 in. cutting diameter allows precise work in tight profiles and small-scale cutting applications.
• Right-Hand Rotation - Compatible with standard right-hand router collets and CNC routing spindles for straightforward installation with no special tooling required.
• Versatile Material Compatibility - Designed for use on solid wood, wood composites, plastic materials, and laminates, this bit transitions easily between material types without changing tools.

Why This Product

• When upper-face finish quality is the priority - such as routing laminated panels, veneered plywood, or melamine - the downcut geometry actively prevents fiber tearout on the top surface, reducing sanding and finishing time after the cut.
• The super-micrograin carbide formulation is engineered to hold a keen cutting edge through extended use across solid wood, composites, plastics, and laminates, meaning fewer tool changes and lower overall tooling costs on repeated production runs.
• At 1/8 in. diameter, this bit fills a practical gap for CNC operators and hand-router users who need to cut tight inside corners, narrow slots, or fine detail profiles that larger bits simply cannot reach.
• The low-angle spiral runs cooler than conventional spiral geometries - reducing heat buildup at the cutting edge, which directly extends the working life of the bit and helps maintain cut quality over the long term.

Specifications

• Manufacturer Part Number: 192.001.11
• Brand: CMT Orange Tools
• Product Type: Solid Carbide Downcut Spiral Bit
• Diameter: 1/8 in.
• Cutting Height: 1/2 in.
• Total Length: 2 in.
• Shank: 1/4 in.
• Number of Teeth: 2
• Material: HWM (Super-Micrograin Solid Carbide)
• Rotation: Right-Hand (RH)

Approved Applications

• CNC Routing
• Panel Sizing
• Copying and Template Routing
• Upper-Face Finish Routing
• Veneer and Laminate Routing
• Solid Wood Routing
• Wood Composite Routing
• Plastic Material Routing
• General Router Table and Handheld Router Applications