Amana Tool 46283 46285 46289 46294 46294-S 46294-U 46479
2-flute ball nose 6mm - 1/4" (ZrN)
Type: ball nose bit · Diameter: 0.25" · Flutes: 2
Starting points only, copied from the makers' own published data. Every machine differs: test in scrap, tune by ear. Neither ChipLoad nor the makers 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 maker.
| Material | Machine class | RPM | Feed IPM | Chip load (in) | Note | Source |
|---|---|---|---|---|---|---|
| Aluminum, Copper, Brass | industrial | 18000 | 140.0 – 210.0 | 0.004 – 0.006 | Manufacturer chart range at 18,000 RPM, depth of cut 1xD (reduce feed 25% at 2xD, 50% at 3xD). Page 1. Amana's chart gives one combined row for metals and plastics; ChipLoad lists it under each. | Amana Tool |
| Plastic, Acrylic, Plexiglas | industrial | 18000 | 140.0 – 210.0 | 0.004 – 0.006 | Manufacturer chart range at 18,000 RPM, depth of cut 1xD (reduce feed 25% at 2xD, 50% at 3xD). Page 1. Amana's chart gives one combined row for metals and plastics; ChipLoad lists it under each. | Amana Tool |
| Wood, MDF, Sign-Foam | industrial | 18000 | 250.0 – 320.0 | 0.007 – 0.009 | Manufacturer chart range at 18,000 RPM, depth of cut 1xD (reduce feed 25% at 2xD, 50% at 3xD). Page 1. | Amana Tool |
Retrieved 2026-10-16. Get the tool file from the maker: Amana Tool downloads
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