Amana Tool 46490-K
3-flute ball nose / flat end (extra long) 1/4" (Spektra-Coated)
Type: ball nose bit · Diameter: 0.25" · Flutes: 3
Starting points only, sourced from the manufacturers' own published data. Every machine differs: test in scrap, tune by ear. Neither ChipLoad nor the manufacturers are responsible for broken tools.
Published values, summarized per material and machine class. For the full CAM library (plunge, depth, stepover), download it from the manufacturer.
| Material | Machine class | RPM | Feed IPM | Chip load (in) | Note | Source |
|---|---|---|---|---|---|---|
| Plastic, Acrylic, Plexiglas | industrial | 18000 | 135.0 – 190.0 | 0.0025 – 0.0035 | Manufacturer chart range at 18,000 RPM, depth of cut 1xD (reduce feed 25% at 2xD, 50% at 3xD). Page 2. ✓ Cross-checked | Amana Tool |
| Wood, MDF, Sign-Foam | industrial | 18000 | 215.0 – 320.0 | 0.004 – 0.006 | Manufacturer chart range at 18,000 RPM, depth of cut 1xD (reduce feed 25% at 2xD, 50% at 3xD). Page 2. ✓ Cross-checked | Amana Tool |
Retrieved 2026-10-16. Get the tool file from the manufacturer: Amana Tool downloads