ITC Carbide End Mill Square Edge 4121 - 4 Flute 30° Helix With Facet Relief & Diamond Coating - Composites - 6mm

The ITC Carbide End Mill Square Edge 4121 is a 6mm diameter, 4-flute carbide end mill designed for high-precision work in composite materials. It combines a 30° helix, facet relief, and a diamond coating to deliver efficient chip evacuation, stable cutting, and extended tool life. The square edge design provides clean entry cuts and tight tolerances, making it ideal for pockets, slots, and profiling in fiber-reinforced and resin-rich composites.

Designed for professionals across engineering, fabrication, and hobbyist shops that work with composites, this end mill offers reliable performance under demanding conditions. The robust 4-flute geometry balances aggressive material removal with precise control, helping you achieve consistent finishes and reduce downtime on production runs.

• Diamond coating for longer tool life: The diamond coating provides superior wear resistance and heat tolerance, keeping the cutting edge sharp longer when tackling abrasive composite materials and reducing the need for frequent tool changes.
• 30° helix with facet relief for stable, clean cuts: The combination minimizes chatter and deflection, delivering smooth surfaces and consistent chip formation in fiber-reinforced stacks.
• 4-flute design for efficient chip evacuation: Four flutes enable higher feed rates and effective chip removal, supporting productive cutting and steady performance across long runs.

This end mill helps you complete composite parts with repeatable accuracy and professional finishes. The 6mm size fits common pockets and fixtures, while the optimized geometry and diamond coating translate to fewer interruptions for tool changes and more reliable results across multiple jobs.