0.0591" (1.50mm) × .315" LOC Diamond Flute PCB Router, Fish Tail, 1/8" Shank | R129

Kyocera 1.50mm Diamond-Flute PCB Router | .315" LOC | Fish Tail | Up-Cut

The R129 solid carbide diamond-flute router features a 0.0591" (1.50mm nominal) cutting diameter, 0.315" (8.00mm nominal) length of cut, and standard 1/8" (3.175mm) shank. Manufactured by Kyocera, this precision router is designed for machining FR4/G10 printed circuit board laminates, fiberglass, phenolic materials, and other abrasive composites.

Its diamond-pattern cutting geometry combines numerous small, intersecting cutting edges with an up-cut configuration and fishtail tip. This combination makes the router suitable for precision PCB profiling, board outlines, slots, and cutouts in layered materials.

Key Features

• 0.0591" (1.50mm) cutting diameter: Precision cutting width for PCB profiles, slots, and contours
• 0.315" (8.00mm nominal) LOC: Extended cutting reach for suitable fiberglass laminates and composite workpieces
• Diamond-flute geometry: Multiple intersecting cutting edges help control fraying, chipping, and fiber pull-out under appropriate machining conditions
• Fish tail tip: End-cutting geometry supports entry and through-routing in suitable sheet materials
• Up-cut configuration: Helps direct chips and routing debris upward during cutting
• Solid tungsten carbide: Provides rigidity and resistance to abrasive wear
• 1/8" shank: Fits compatible precision CNC spindle collets and tool holders

Diamond-Flute Geometry & Fish Tail Tip

Diamond-flute routers, also known as diamond-cut or diamond-pattern routers, use numerous small, intersecting cutting edges rather than conventional continuous spiral flutes. This cross-cut geometry is commonly used for routing abrasive and layered materials such as FR4 printed circuit boards, G10 fiberglass laminates, and reinforced composites.

The fishtail tip provides cutting edges at the end of the router. Under suitable machining conditions, the end geometry supports entry into sheet materials and can help control edge damage during through-routing.

The up-cut configuration helps direct routing debris upward. Properly selected cutting conditions and secure workholding are essential for controlling edge quality, tool deflection, and material breakout.

Extended .315" Cutting Length

R129 provides approximately 8.00mm of cutting length, making it useful for suitable thicker laminates and composite sheets that require greater cutting reach.

The longer cutting section can also be more susceptible to deflection than shorter tools of the same diameter. Choose the shortest practical cutting length for the material and avoid excessive side loads.

Important: Diamond-flute refers to the cutting-edge geometry. This is uncoated solid carbide tooling, not diamond-coated or PCD tooling.

Typical Applications

• PCB board outlines, profiling, slots, and cutouts
• FR4 and G10 fiberglass laminate routing
• Thicker PCB laminates requiring additional cutting reach
• Phenolic and epoxy laminate machining
• Fiberglass-reinforced composite trimming
• Carbon-fiber composites where uncoated carbide tooling is appropriate
• Precision CNC routing and prototype fabrication

Technical Specifications

Feeds & Speeds

Correct spindle speed, feed rate, depth of cut, and secure workholding are important when routing fiberglass-reinforced and abrasive PCB laminates.

View Carbide Router Feed & Speed Charts and select the Diamond-Flute Router chart for recommended starting cutting parameters for FR4, G10, fiberglass, and PCB materials.

Cutting parameters are starting points only. Adjust for material, spindle capability, machine rigidity, tool condition, workholding, and cutting depth. Avoid excessive cutting loads and use appropriate dust extraction when machining fiberglass or carbon fiber.

Related Router Bits & Guides

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