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Single Flute Downcut Cnc Router Bits Multipurpose Made In China
Single flute downcut router bits are spiral-cut CNC router bits with one cutting flute and a downward-spiral geometry designed for multipurpose routing in wood, plastics, aluminum, composites, and solid surface materials, offering superior top-surface finish, Enquire now
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Single Flute Downcut Router Bits Multipurpose



Single flute downcut router bits are spiral-cut CNC router bits with one cutting flute and a downward-spiral geometry designed for multipurpose routing in wood, plastics, aluminum, composites, and solid surface materials, offering superior top-surface finish, enhanced workpiece holding, and efficient chip evacuation in both handheld and CNC applications.


Parameter Typical Value
Material Solid tungsten carbide (C-2, C-4, FK07, FK08, nano-blue coated) 
Flute Count 1 (single flute) 
Cutting Direction Downcut (downward spiral) 
Flute Type O-flute (open, polished), spiral 
Shank Diameter 1/8" (3.175 mm), 1/4" (6.35 mm), 6 mm, 8 mm 
Cutting Diameter 1 mm – 12 mm (common: 1/8", 3 mm, 4 mm, 6 mm, 1/4") 
Cutting Length (Flute Length) 3 mm – 32 mm (common: 1/4", 3/8", 1/2", 3/4", 1") 
Overall Length 38 mm – 75 mm (common: 1-1/2", 2", 2-1/2", 3") 
Coating Uncoated, nano-blue, TiAlN, diamond-like (DLC) 
Max RPM 18,000 – 50,000 RPM (varies by shank diameter and material) 

Key Features
Single flute geometry: One cutting edge provides faster material removal and larger chip clearance compared to multi-flute bits, ideal for soft plastics, aluminum, and abrasive materials

Downcut spiral: Downward-spiral flutes push chips down and away from the workpiece, preventing workpiece lifting, reducing tear-out on the top surface, and improving part holding during cutting

Solid carbide construction: Made from micro-grain tungsten carbide (C-2, C-4, FK07, FK08, or nano-blue coated) for high hardness (91–94 HRA), wear resistance, and long tool life in abrasive materials like MDF, plywood, aluminum, and composites

O-flute (open flute) design: Polished, open-flute geometry allows razor-sharp cutting edges and easy chip evacuation, reducing heat buildup and improving edge finish on plastics and aluminum

Material Applications
Single flute downcut router bits are optimized for routing:

Wood & wood composites: Plywood, MDF, particle board, hardwood, softwood, melamine, laminates

Plastics: Acrylic (PMMA), polycarbonate (PC), PVC, HDPE, UHMW, polystyrene, Gatorfoam, Coroplast, Signfoam, Foamex, Trespa, ACM, Dibond, HPL

Aluminum & non-ferrous metals: Soft aluminum (up to 6061), brass, copper (with appropriate feeds/speeds)

Composites: Carbon fiber prepreg, glass fiber, technical laminates, honeycomb board

Solid surface: Corian, Hi-Macs, technical solid surface materials

Foam & technical boards: PE, PUR, PS foam cores, foam board, technical foils


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