0.0394" (1.00mm) x .060" LOC 2-Flute Stub Length Square End Carbide End Mill, 1/8" Shank | M109ST

1.00mm (.0394") 2-Flute Stub Length Square End Carbide End Mill – M109ST

This 1.00mm (.0394") solid carbide micro end mill features a short .060" length of cut, 2-flute square end geometry, 1.45" overall length, and a standard 1/8" shank. Its stub-length cutting section makes it well suited for shallow precision CNC milling, narrow slots, miniature profiles, and detail machining where reduced tool deflection is important.

Compared with longer-flute end mills of the same diameter, the .060" stub-length cutting section provides improved cutting-section rigidity and reduced susceptibility to deflection. This is particularly useful for shallow machining operations that do not require extended cutting reach.

The 2-flute up-cut spiral geometry helps evacuate chips during machining. The polished flutes provide smooth cutting surfaces, while solid tungsten carbide construction offers rigidity and wear resistance. The square end geometry is useful for small slots, pockets, profiles, contours, and flat-bottom features.

This tool is suitable for precision machining in plastics, acrylic, wood, composites, fiberglass, and selected soft non-ferrous metals such as aluminum and brass when appropriate feeds, speeds, workholding, and machining conditions are maintained.

Common Applications

• Precision CNC milling and fine-detail machining
• Shallow narrow-slot cutting
• Miniature profiling and contouring
• Small pockets and flat-bottom features
• PCB milling and routing
• Plastic and acrylic machining
• Fine engraving and detailed cutting
• Wood and miniature model-making applications
• Fiberglass and composites with suitable cutting parameters
• Selected non-ferrous metals under controlled machining conditions

Features & Benefits

• 1.00mm (.0394") diameter: Suitable for narrow features, miniature components, and precision CNC work.
• .060" stub-length LOC: Short cutting section helps reduce tool deflection during shallow machining.
• 2-flute geometry: Provides cutting edges with space for chip evacuation.
• Up-cut spiral flutes: Help move chips away from the cutting area.
• Polished flutes: Provide smooth cutting surfaces for precision machining.
• Square end: Suitable for miniature slots, pockets, contours, and flat-bottom cuts.
• Solid tungsten carbide: Provides rigidity and wear resistance.
• 1/8" shank: Compatible with appropriate precision CNC collets and toolholders.

Specifications

Why Choose a Stub-Length End Mill?

Stub-length end mills have shorter cutting sections than longer-flute tools of comparable diameter. This helps reduce cutting-section deflection and can improve control when milling shallow features. The tradeoff is reduced cutting reach, so stub-length tools are particularly useful when machining accuracy and rigidity are more important than depth.

Important Machining Considerations

Although the short .060" cutting section improves rigidity compared with longer-flute designs, this 1.00mm end mill still requires appropriate machining conditions. Use rigid workholding, precision toolholding, minimal spindle runout, suitable spindle speeds, controlled cutting depths, and carefully selected feed rates. Excessive cutting forces or tool deflection may cause premature breakage.