CNC Bit Reference — Genmitsu BN10A — Micro Ball Nose Set (0.8–2.5mm)
Notes
Use larger diameters (2-2.5mm) for roughing small areas. Drop to 1mm or smaller for final detail passes only.
Tips
FRAGILE at 0.8-1mm. Never plunge straight down. Use ramp entry. Feed very conservatively.
Details
Use larger diameters (2-2.5mm) for roughing small areas. Drop to 1mm or smaller for final detail passes only.
Specs
| Setting | Value |
|---|---|
| Shank | 1/8" (3.175mm) |
| Cutting Diameters | 0.8–2.5mm (10pc set) |
| Flutes | 2 — ball nose |
| Material | Tungsten carbide |
Limits
| Setting | Value |
|---|---|
| Max Rpm | 30000 RPM |
Applications
| Setting | Value |
|---|---|
| Best For | Fine detail 3D relief, miniature carving |
2.0mm
| Setting | Value |
|---|---|
| 2mm Rpm | 9000-10000 RPM |
| 2mm Feed | 600-800 mm/min |
| 2mm Stepover | 5-8% of diameter |
1.0mm
| Setting | Value |
|---|---|
| 1mm Rpm | 10000 RPM |
| 1mm Feed | 200-300 mm/min |
| 1mm Stepover | 3-5% of diameter |
Safety
| Setting | Value |
|---|---|
| Entry | Ramp entry only — never straight plunge |
Tips
FRAGILE at 0.8-1mm. Never plunge straight down. Use ramp entry. Feed very conservatively.