CMT 192.503.11 Solid Carbide Downcut Spiral Bit 3/8" by CMT is a precision-ground solid carbide routing tool engineered to deliver clean, tearout-free cuts on the upper face of your workpiece. Designed for use in CNC routing machines, router tables, and handheld routers, this 3/8" downcut spiral bit excels wherever upper-surface finish quality is the priority - such as veneer work, laminate routing, panel sizing, and copying operations. Its downcut spiral geometry presses chips downward into the cut, protecting the top face from splintering while maintaining efficient material removal across solid wood, wood composites, plastic materials, and laminates.

Key Features

• Solid Carbide Construction from Super-Micrograin Carbide - a special super-micrograin carbide formulation was created to produce and hold a keen cutting edge, delivering superior wear resistance and more resharpenings compared to carbide-tipped alternatives, which means lower long-term cost per cut.
• Low-Angle Downcut Spiral Geometry - the new low-angle spiral is designed specifically to shear wood cleanly and provide efficient chip ejection, so the tools run cooler and the edges last longer - critical for extended production runs and finish-sensitive applications.
• 2-Flute Design - two cutting edges balance cutting force and chip load, supporting smooth, consistent passes through solid hardwood, MDF, chipboard, laminates, melamine, and plastic without excessive heat buildup.
• Right-Hand Rotation - compatible with standard router spindles and CNC routing machines, ensuring immediate, straightforward installation with no need for specialized tooling configurations.
• 1/2" Shank Diameter - the larger 1/2" shank provides greater rigidity and reduced runout compared to smaller shank sizes, translating to improved dimensional accuracy and a cleaner finished edge in demanding routing applications.
• 1 1/4" Cutting Height - generous cutting depth accommodates panel sizing, template copying, and full-depth passes through common sheet goods and solid stock in a single setup.

Why This Product

• When upper-face finish quality is non-negotiable - such as veneered panels, laminate-faced boards, or melamine sheet goods - the downcut spiral geometry actively prevents tearout by directing cutting forces and chips downward, away from the show face.
• The super-micrograin carbide formulation holds a keen edge longer than standard carbide, reducing interruptions for tool changes during production routing, panel sizing, or copying work.
• The low-angle spiral design keeps the bit running cooler during use, which extends cutting edge life and protects heat-sensitive materials like plastic and laminate from surface damage or burning.
• With a 3/4" working combination of 3/8" cutting diameter and 1 1/4" cutting height, this bit covers a practical range of groove, dado, and profile routing tasks across solid wood, MDF, chipboard, and composite materials in a single versatile tool.

Specifications

• Manufacturer Part Number: 192.503.11
• Brand: CMT Orange Tools
• Diameter: 3/8"
• Cutting Height: 1 1/4"
• Total Length: 3 1/4"
• Shank Diameter: 1/2"
• Number of Teeth: 2
• Rotation: Right-Hand (RH)
• Material: Solid Carbide (HWM - Super-Micrograin Carbide)
• Product Type: Downcut Spiral Router Bit

Approved Applications

• Cutting and routing solid wood and wood composites
• Template copying and panel sizing
• Veneer and laminate routing where upper-face finish is critical
• Routing plastic materials and laminate sheet goods
• CNC routing operations requiring clean top-surface results
• Router table and handheld router applications