18° V-bit feeds and speeds
6 sourced settings for 18° V-bits from Amana Tool. Published chip loads run from 0.003 to 0.007 in per tooth.
By size: 1/4"
Other angles: 15° · 30° · 60° · 90° · Calculator →
| Bit | Material | RPM | Feed IPM | Chip load (in) | Manufacturers | Sources |
|---|---|---|---|---|---|---|
| 1/4" 18-degree V-bit | aluminum | 18000 | 50–130 ⚠ | 0.003–0.007 | Amana Tool | [1] |
| 1/4" 18-degree V-bit | hardwood | 18000 | 50–130 ⚠ | 0.003–0.007 | Amana Tool | [1] |
| 1/4" 18-degree V-bit | plastic | 18000 | 50–130 ⚠ | 0.003–0.007 | Amana Tool | [1] |
| 1/4" 18-degree V-bit | softwood | 18000 | 50–130 ⚠ | 0.003–0.007 | Amana Tool | [1] |
| 1/4" 18-degree V-bit | solid surface | 18000 | 50–130 ⚠ | 0.003–0.007 | Amana Tool | [1] |
Each row summarizes the published values for that bit and material across all machine classes (open a size for the per-class breakdown). ⚠ = the manufacturer's chart feed doesn't match its own chip load (see bit page).
18° V-bit: cut width vs depth
Width at the surface = 2 × depth × tan(9°). Standard V-groove geometry; the bit's flat tip, if any, adds its own width.
| Depth (in) | Width (in) | Depth (mm) | Width (mm) |
|---|---|---|---|
| 0.03125 | 0.010 | 0.79 | 0.25 |
| 0.0625 | 0.020 | 1.59 | 0.50 |
| 0.125 | 0.040 | 3.17 | 1.01 |
| 0.1875 | 0.059 | 4.76 | 1.51 |
| 0.25 | 0.079 | 6.35 | 2.01 |
FAQ
What feeds and speeds for a 18 degree V-bit in plastic?
Published manufacturer data (Amana Tool) gives a chip load of 0.003–0.007 in per tooth and a feed of 50–130 IPM across 2 sourced settings and all machine classes. Pick your machine class on the page for a tighter range, start low and test in scrap.
What feeds and speeds for a 18 degree V-bit in softwood?
Published manufacturer data (Amana Tool) gives a chip load of 0.003–0.007 in per tooth and a feed of 50–130 IPM across 1 sourced settings and all machine classes. Pick your machine class on the page for a tighter range, start low and test in scrap.
What feeds and speeds for a 18 degree V-bit in hardwood?
Published manufacturer data (Amana Tool) gives a chip load of 0.003–0.007 in per tooth and a feed of 50–130 IPM across 1 sourced settings and all machine classes. Pick your machine class on the page for a tighter range, start low and test in scrap.
What feeds and speeds for a 18 degree V-bit in aluminum?
Published manufacturer data (Amana Tool) gives a chip load of 0.003–0.007 in per tooth and a feed of 50–130 IPM across 1 sourced settings and all machine classes. Pick your machine class on the page for a tighter range, start low and test in scrap.
What feeds and speeds for a 18 degree V-bit in solid surface?
Published manufacturer data (Amana Tool) gives a chip load of 0.003–0.007 in per tooth and a feed of 50–130 IPM across 1 sourced settings and all machine classes. Pick your machine class on the page for a tighter range, start low and test in scrap.
How wide is a 18 degree V-bit cut at 1/8 in deep?
Width = 2 × depth × tan(angle ÷ 2) = 2 × 0.125 × tan(9°) = 0.040 in. That's standard V-groove geometry, not a manufacturer value.