0.0157" (0.40mm, Approx. .016") x .079" LOC 2-Flute Square End Carbide End Mill, 1/8" Shank | M103

0.40mm (.0157") 2-Flute Square End Carbide End Mill – M103

This Kyocera solid carbide micro end mill features a precision 0.40mm (.0157") cutting diameter, .079" length of cut, 2-flute square end geometry, 1.50" overall length, and a standard 1/8" shank. It is designed for fine CNC milling, narrow slots, profiling, contouring, and detailed machining where small cutting features are required.

The 2-flute up-cut geometry helps evacuate chips during precision machining. Solid carbide construction provides rigidity and wear resistance, while the square end geometry is useful for miniature slots, pockets, profiles, and flat-bottom features.

This end mill can be used for detail machining in plastics, acrylic, wood, fiberglass, composites, and selected soft non-ferrous metals such as aluminum and brass when appropriate feeds, speeds, workholding, and machine rigidity are maintained.

Common Applications

• Micro CNC milling and precision detail machining
• Narrow slotting, profiling, and contouring
• Small pocketing and flat-bottom features
• PCB milling and circuit board machining
• Plastic and acrylic machining
• Fine engraving and intricate detail cutting
• Wood and miniature model-making applications
• Fiberglass and composite machining with suitable cutting parameters
• Selected non-ferrous metals, including aluminum and brass, under controlled micro-machining conditions

Features & Benefits

• 0.40mm (.0157") diameter: Suitable for narrow features, miniature components, and precision CNC detail work.
• Kyocera solid carbide construction: Provides rigidity and wear resistance for precision machining.
• 2-flute geometry: Offers cutting edges with space for chip evacuation.
• Up-cut flutes: Help move chips away from the cutting area.
• Square end: Suitable for miniature slots, pockets, profiles, and flat-bottom cuts.
• .079" flute length: Provides cutting reach for small features and controlled detail machining.
• 1/8" shank: Compatible with appropriate precision CNC toolholders and collets.

Specifications

Additional Specialty Applications

This 0.40mm carbide end mill may also be useful for instrument makers, luthiers, model makers, jewelry work, miniature components, and other precision applications requiring narrow CNC cuts. Always verify the required slot width, material suitability, machine rigidity, and tool runout before machining.

Important Micro-Machining Considerations

At just 0.40mm diameter, this end mill is delicate. Successful machining requires a rigid machine, precision toolholding, minimal spindle runout, appropriate spindle speed, conservative cutting depths, and carefully selected feed rates. Excessive cutting forces or tool deflection may cause premature breakage. Use suitable machining parameters for the material and application.