Milling Carbon Fiber Composites: Diamond-Coated Bits & Delamination Prevention

The Abrasive Nature of Carbon Fibers

Carbon fibers act like microscopic ceramic blades. When machining solid carbon plates, standard carbide flutes suffer abrasive flank rounding within 20 linear feet of cutting.

Tooling Recommendations: Diamond CVD & Burr Routers

• Cross-Hatch Burr Geometry (Pineapple Cutters): Disperses cutting forces in multiple directions, grinding fibers rather than pulling them upward.
• True CVD Diamond Coating: Provides an 8000+ HV hardness rating that extends bit longevity by up to 15x over standard carbide.
• Dust Extraction: Carbon fiber dust is conductive and abrasive. Always use an airtight HEPA dust collection shroud to protect spindle electronics.