0.0197" (0.50mm, Approx. .020") x .030" LOC 2-Flute Stub Length Square End Carbide End Mill, 1/8" Shank | M105ST

0.50mm (.0197", Approx. .020") 2-Flute Stub Length Carbide End Mill – M105ST

This 0.50mm (.0197") solid carbide micro end mill features a short .030" length of cut, 2-flute square end geometry, 1.50" overall length, and standard 1/8" shank. Its stub-length cutting section is designed for shallow precision CNC milling where small features, accurate slotting, and reduced tool deflection are important.

Size note: The nominal cutting diameter is 0.50mm (.0197"), approximately .020". The .020" designation is a rounded inch reference rather than the exact nominal cutting diameter.

Compared with a longer cutting-length end mill of the same diameter, the .030" stub-length cutting section offers increased rigidity and reduced susceptibility to deflection when machining shallow features. This makes it particularly useful for miniature slots, fine profiling, engraving, and detail cuts that do not require extended cutting reach.

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 suitable for slots, pockets, contours, and flat-bottom features in appropriate materials.

Common Applications

• Micro CNC milling and precision detail machining
• Shallow, narrow slotting and profiling
• Miniature pockets and flat-bottom features
• Fine engraving and intricate detail cutting
• PCB milling and circuit board machining
• Plastics, acrylic, and machinable polymers
• Wood and miniature model-making applications
• Fiberglass and composites with suitable cutting parameters
• Selected soft non-ferrous metals under controlled micro-machining conditions

Features & Benefits

• 0.50mm (.0197") cutting diameter: Ideal for small features and precision detail work.
• Stub-length .030" LOC: Short cutting section helps reduce deflection during shallow machining.
• 2-flute geometry: Provides 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, contours, and flat-bottom cuts.
• Solid carbide construction: Provides rigidity and wear resistance for precision machining.
• 1/8" shank: Compatible with appropriate precision CNC collets and toolholders.

Specifications

Why Choose a Stub-Length End Mill?

Stub-length end mills use a shorter cutting section to provide increased rigidity compared with longer-flute tools of similar diameter. For delicate micro-machining operations, reduced cutting-section deflection can improve control and help maintain dimensional accuracy. The tradeoff is reduced cutting reach, making this design especially appropriate for shallow features.

Important Micro-Machining Considerations

At just 0.50mm diameter, this end mill remains delicate despite its stub-length design. Precision toolholding, minimal spindle runout, rigid workholding, suitable spindle speeds, shallow cutting depths, and carefully selected feed rates are essential. Excessive cutting forces or tool deflection can cause premature breakage.