What is 12-flute corner radius end mill?

2025-09-15

Definition

Flute Count: 12 flutes → provides multiple cutting edges for smoother machining.
Tool Type: Corner radius (round nose) → the tip has a radius transition to reduce stress concentration and increase tool life.
Material: Usually made of ultra-fine grain solid carbide, with optional coatings such as TiAlN, AlTiN, etc.

Key Features

High Flute Coun

Small chip load per tooth for stable cutting.

Achieves excellent surface finish, close to mirror-like quality.

Corner Radius Design

Reinforces cutting edge strength and prevents chipping.

Ideal for 3D contouring and cavity milling.

Finishing-Oriented

Best suited for light stock removal and high-precision finishing.

Not recommended for heavy roughing.

Applications

Mold & Die Industry → fine surface finishing, cavity machining, 3D shapes.
Aerospace Components → machining titanium alloys, nickel-based alloys.
Precision Parts → surface finishing on plastics, aluminum alloys, hardened steels.
Engraving/3D Machining → used in CNC engraving and precision machining.

Usage Recommendations

Cutting Strategy: Use small depth of cut and feed, with high spindle speed.
Cooling: Air blast or minimum quantity lubrication (MQL) to prevent built-up edge.
Programming: Well-suited for constant Z-level finishing toolpaths.

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