Genmitsu OS10B — O-Flute Single Upcut
Genmitsu
Overview
Single-flute O-flute (zero-flute) upcut end mill for plastics and non-ferrous metals. Shank: 1/8in (3.175mm). Cutting dia: 1/8in. Flutes: 1. Max RPM: 24,000. The O-shaped geometry provides maximum chip clearance for clean plastic cuts.
Properties
Difficulty
intermediate
Pros
- Essential for clean acrylic cuts
- O-flute geometry clears chips fast — prevents melting
- Also works on HDPE and soft plastics
- Nano blue coating reduces friction
Cons
- Not for wood (single flute, slower material removal)
- Must run at correct speed — too slow melts acrylic
Best For
- Acrylic (cast)
- HDPE
- polycarbonate
- Delrin/POM
- ABS sheet
- any thermoplastic
- light aluminum cuts with lubricant
Avoid For
- Wood (use spiral upcut/downcut instead)
- dry aluminum cutting (always use lubricant)
- ferrous metals
- very deep cuts without chip evacuation
Storage
Dry storage.
Brands
Genmitsu (SainSmart)