4 Flutes Long Neck Corner Radius End Mill
High-Quality Corner Radius End Mills from SAMHO
For precision and repetitive performance, look no further than our 4-flute long neck corner radius end mills. These end mills are made from quality materials and machined to withstand the rigors of the trade. Contact us today for more details and to enhance your machining capabilities with SAMHO products.
Home » End Mill for Copper » 4 Flutes Long Neck Corner Radius End Mill

DLC Coating Delivers Excellent Anti-Stick Performance in Non-Ferrous Machining
The ultra-low friction and non-reactive properties of DLC coating prevent material buildup when cutting ductile metals like red copper and aluminum. It enhances surface finish, minimizes edge wear, and enables dry or near-dry machining without sacrificing tool life.
Long Neck Design Enables Deep Cavity Access with High Rigidity
The extended neck geometry provides increased reach for deep or narrow cavities without tool interference. Ideal for precision mold inserts, electronic component housings, or any complex geometry requiring fine-feature access while maintaining tool stability.
4-Flute Construction Optimizes Cutting Efficiency and Surface Quality
Compared to 2-flute tools, the 4-flute design allows for higher feed rates and smoother cutting action in soft and sticky materials. It enables greater productivity during finishing and semi-finishing passes, reducing vibration and improving dimensional accuracy.
Corner Radius Edge Increases Tool Strength and Reduces Edge Chipping
The corner radius enhances edge strength while minimizing sharp-point fragility—offering improved resistance to wear and edge breakage, especially when machining copper electrodes, aluminum mold details, or resin-based components with delicate contours.
Mirror-Polished Flutes Support Chip Evacuation and Thermal Control
Highly polished flute surfaces help prevent chip adhesion and promote smooth evacuation in materials prone to sticking, such as pure copper. This improves thermal stability, prevents chip jamming, and ensures cleaner finishes with less downtime.
Application-Specific Cutting Data Ensures Fast Setup and Reliable Output
Samho provides detailed cutting parameters tailored for copper, aluminum, and engineering plastics. Users can reference recommended speeds, feeds, and depths to reduce trial time and ensure optimal tool performance from the start.

4 Flutes Long Neck Corner Radius End Mill Catalog
Total 69 Models-Unit(Mm)






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