Widin Carbide Corner Radius End Mill - 2 Flute Long Neck Back Draft Type - 0.3mm x3mm x R0.05

The Widin Carbide Corner Radius End Mill is a high-precision cutting tool designed for micro‑machining and hard-material applications. Built for engineers, machinists, and precision hobbyists, it combines a tiny 0.3 mm diameter with a robust 3 mm cutting length and a precise R0.05 corner radius to deliver clean edges and consistent finishes in tight spaces.

• Diameter: 0.3 mm
• Cutting length: 3 mm
• Corner radius: R0.05
• Flutes: 2
• Helix angle: 30°
• Center cutting: Yes
• Material: Ultra-fine grain carbide
• Neck design: Long neck with back-draft geometry for stability
• Chip evacuation: Efficient, designed for micro‑machining
• Rake-adjustable neck: Neck length adjustments based on the rake angle for versatility across operations
• Hardness capability: Suitable for high-hardened materials up to HRc70

This end mill is engineered to solve real-world machining challenges. The center-cutting geometry enables plunging and pocketing in a single tool, while the 30° helix promotes steady chip evacuation and reduces built-up edge during cutting. The corner radius provides smooth radii on edges, minimizing burrs and improving surface finish on tiny features.

The combination of a long neck and back‑draft design stabilizes the tool during deep cuts and on angled surfaces, reducing vibration and chatter. This stability translates into consistent wall thickness, tighter tolerances, and less tool wear over time. Because neck length can be effectively adjusted with the rake angle, you gain flexibility to tackle varied fixtures and workpiece geometries without swapping tools. Ideal for micro‑slots, fine radii, and hard materials—up to HRc70—this end mill expands your capabilities in precision steel, tool steels, and other tough alloys.