Solid carbide diamond-flute PCB router bits, also called
diamond-cut router bits, are designed for routing
FR-4, G10, fiberglass, phenolic laminates, PCB material, and other abrasive composites.
Their fine multi-edge flute pattern helps reduce chipping and delamination when cutting board outlines,
slots, cutouts, and detailed profiles.
Diamond-Flute Routers Explained — Materials, Tip Styles, and When to Use Them →
Chip Breaker vs. Diamond Flute Routers — When to Use Each →
Diamond-Cut PCB Router Bits for Abrasive Materials
Diamond-flute routers use a fine, multi-edge cutting pattern that is
gentler on brittle and fracture-prone materials than more aggressive router geometries.
They are commonly used for PCB routing, fiberglass laminate routing, composite work, and other
applications where clean edges and controlled cutting are important.
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Best for: FR-4 PCB material, G10, fiberglass, phenolic laminates,
abrasive composites, and similar brittle materials
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Why choose it: Helps minimize chipping, delamination, and material fracture
while maintaining edge durability
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Common uses: PCB board outlines, slots, cutouts, laminate trimming,
and composite routing
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Tip options:
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Fish Tail tips are often preferred for delicate entry into brittle materials
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Drill Point tips are commonly used where repeated plunging
or added tip strength is required
Use the filters below to narrow the results by diameter, flute geometry,
plunge-tip style, cutting direction, and Length of Cut / LOC to find the
router bit needed for your application.
Choosing Length of Cut / LOC: LOC is the usable cutting length of the router bit.
Use the Length of Cut / LOC filter to narrow tools by required cutting depth.
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Through-cutting sheet material: choose an LOC longer than the material thickness.
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Grooves, slots, pockets, or partial-depth cuts: choose an LOC deep enough for the required cut depth.
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Small diameters: long cutting lengths are more fragile and may not be practical for deep, narrow cuts, especially in abrasive materials such as fiberglass, G10, FR-4, and carbon fiber.
Routing carbon fiber? Because carbon fiber is extremely abrasive,
learn when a diamond-coated router is the better choice
for longer tool life and reduced edge wear.
PCD upgrade: For carbon fiber and the most abrasive composites, explore our
PCD diamond-coated router lineup →
Looking for value-priced tooling? Browse our
Value Tool Deals
collection for lightly used routers, factory-resharpened tools, and surplus carbide tooling
offered at reduced prices.
