CMT Solid Carbide Downcut Spiral Router Bit, 1/4" Diameter x 1" Cut x 2-1/2" Long, RH, DLCS Coated is a precision spiral router bit engineered for applications where upper-surface quality is non-negotiable. Built from solid carbide and protected by CMT's DLCS coating - a modified diamond-like carbon system with a chromium nitride base layer - this 2-flute downcut bit is designed for clean, tearout-free results on veneered panels, laminate surfaces, melamine, and fine hardwood projects. Whether you are running it through a CNC routing machine, a router table, or a handheld router, this 1/4" shank bit delivers controlled chip ejection and lasting edge retention across a wide range of materials.

Key Features

• DLCS Modified Diamond-Like Carbon Coating - a hard chromium nitride base layer supports a tribologically effective carbon coating, giving the cutting edges high hardness and exceptional abrasion resistance so the bit stays sharp longer under demanding use conditions.
• Solid Carbide Construction (HWM) - manufactured entirely from premium micrograin hard metal carbide rather than carbide-tipped steel, giving you a stiffer, more rigid body that resists deflection and allows multiple resharpenings over the tool's service life.
• Downcut Spiral Geometry - the helical flute presses chips downward into the cut rather than upward, preventing fiber lifting and tearout on the top face of the workpiece - the ideal choice whenever the visible surface must remain clean and unblemished.
• DLCS Coating Prevents Excessive Heat Buildup - the coating remains fully effective after repeated use, protecting cutting performance and extending the productive life of the bit in high-friction routing operations.
• 2-Flute Design - two cutting edges provide a balance of chip clearance and surface quality, suitable for both finish passes and through-cuts in wood composites, plastics, and natural wood species.
• Right-Hand (RH) Rotation - compatible with standard router spindle rotation, making this bit a direct-fit for the vast majority of CNC routers, router tables, and handheld routers without any adapters or special tooling.
• 1/4" Shank, 1/4" Cutting Diameter - a matched shank and cutting diameter allows use in standard 1/4" collets and keeps the tool profile compact for precise slot cutting, trim routing, and edge work in confined areas.

Why This Product

• When working with veneer, laminate, or melamine where the top surface must be flawless, the downcut spiral geometry actively presses material fibers down rather than pulling them upward, making this bit the right choice for tearout-sensitive applications that other router bits handle poorly.
• The DLCS coating's chromium nitride base layer adds a higher hardness surface beneath the carbon coating, meaning the bit holds up against abrasive materials like MDF and chipboard longer than an uncoated solid carbide bit would under similar conditions.
• Solid carbide construction throughout the entire body - not just the cutting edges - means greater rigidity and dimensional accuracy during high-feed CNC routing passes where a carbide-tipped bit could flex or chatter.
• At 2-1/2" total length with a 1" cutting height and a 1/4" shank, this bit fits directly into the 1/4" collets already found on most CNC routing machines, router tables, and handheld routers, so there is no need for additional toolholding hardware to get started.

Specifications

• Manufacturer Part Number: 192.008.41
• Brand: CMT Orange Tools
• Cutting Diameter: 1/4"
• Cutting Height: 1"
• Total Length: 2-1/2"
• Shank Diameter: 1/4"
• Number of Teeth: 2
• Rotation: Right-Hand (RH)
• Blade Material: Solid Carbide (HWM)
• Coating: DLCS (Modified Diamond-Like Carbon with Chromium Nitride Base Layer)
• Product Type: Downcut Spiral Router Bit
• Macro Class: Router Cutter

Approved Applications

• CNC Routing - clean through-cuts and profile passes where precision and surface integrity are required
• Veneer and Laminate Routing - downcut geometry prevents delamination and surface lifting on fragile face materials
• Melamine Routing - keeps the top melamine layer intact without chipping along the cut line
• Upper-Face Finish Routing on solid hardwood and softwood where the top surface is the show face
• Plywood and MDF panel routing where consistent edge quality and reduced tearout are priorities
• Chipboard and plastic routing where abrasive wear resistance from the DLCS coating extends cutting life
• Router table and handheld router trim work in confined areas