1/8" 2-Flute Straight Plunge
The odd one out next to D03 and D04: same 1/8” cutting diameter, but straight flutes instead of a spiral, and a straight-through 1/8” shank instead of their reduced 1/4”. S01’s little sibling in geometry class, not its little sibling in size — S01 is a 1-1/8” surfacing head, this is a precision detail bit two orders of magnitude smaller.
Specifications
| Property | Value |
|---|---|
| Cutting diameter | 0.125” |
| Shank diameter | 0.125” (straight through) |
| Flutes | 2 |
| Cutting length | 0.4375” |
| Overall length | 1.500” |
| Geometry | Straight flute, center-cutting |
| Corner radius | None — square end |
| Material | Solid carbide, A-Max grade |
| Coating | None |
Feeds & Speeds
For the X-Carve Pro and its 1.5 kW spindle. Computed from first principles rather than the established downcut table — straight flutes don’t auger chips the way a spiral does, so this is a genuinely different geometry class, not just another diameter. Chipload sits a bit below D03’s at the same rpm: Amana’s own description notes this bit trades some feed rate for finish quality, and a straight flute clears a closed slot less efficiently than a spiral does.
| Material | RPM | Feed | Chipload | Plunge | Stepdown |
|---|---|---|---|---|---|
| Hard maple / oak | 14,000 | 95 ipm | 0.0034” | 19 ipm | 0.0625” |
| Soft maple / walnut / cherry | 14,000 | 100 ipm | 0.0036” | 20 ipm | 0.0625” |
| Plywood / veneered sheet | 16,000 | 120 ipm | 0.0038” | 24 ipm | 0.0625” |
| MDF / laminate | 16,000 | 130 ipm | 0.0041” | 28 ipm | 0.0938” |
| Softwood / pine | 16,000 | 130 ipm | 0.0041” | 28 ipm | 0.0938” |
| Acrylic / HDPE | 12,000 | 85 ipm | 0.0035” | 17 ipm | 0.0313” |
Notes
This one can plunge straight down, unlike every downcut in the drawer. A downcut spiral augers chips into its own hole on a plunge, which is why D01–D04 are all ramp-only. A straight flute has no helix to do that — it shears in place without pulling chips vertically, so a direct Z plunge doesn’t pack the hole. Amana grinds this bit center-cutting specifically for that reason.
Maximum cut depth is 0.4375” — the shallowest bit in the shop. Built for detail work: engraving-adjacent passes, fine pocket floors, anything where finish quality matters more than material removal rate.
No reduced shank. D03 and D04 step down from a 1/4” shank to a 1/8” cutting edge; this one is 1/8” all the way from collet to tip. Less rigid over the exposed length as a result — light passes aren’t optional here the way they’re merely prudent on the reduced-shank bits.
Links
- Product page: Amana Tool 45199
- Machine: X-Carve Pro
- CAM library: Fusion hub library, Human Crafted (T14)