# CNC Mill 1 — Part B Drawing

Source: https://wisconsin.twango.dev/des-inv/cnc/drawings/cnc-mill-1b

# CNC Mill 1 — Part B Drawing

> Part drawing for [[cnc-1|CNC Mill 1]] upgrade, Part B. Material: HDPE 4" × 6". TEAMLab standard tolerances.

## Part Drawing

![[cnc-mill-1b-fig01.jpg]]

### Dimensions

| Feature | Value |
|---------|-------|
| Stock | HDPE 4" × 6" |
| Tool | .250 dia. 2-flute end mill |
| Depth | 0.125" |
| Scale | 1:1 |
| Sheet | 1 of 1 |

**Key geometry (all dimensions in inches):**

- Overall profile width: 2.590"
- Overall profile height: 2.590"
- Entry radius R2.590 (large outer arc)
- Internal radii: R0.660, R0.875, R0.6237
- Corner radii R0.250 TYP (typical, 2 places)
- Small fillet R0.125
- Angled face: 20°
- Start program at indicated point (0.850, 0.980 from origin)
- Slot depth R0.380

**Notes:**

1. Use .250 dia. 2-flute end mill
2. Machine to a depth of .125"
3. Center profile in plastic stock

### Title Block

| Field | Value |
|-------|-------|
| Title | CNC 1 Part B |
| Material | HDPE 4" × 6" |
| Scale | 1:1 |
| Tolerances | Fractional ±.025 · 2-place decimal ±.01 · 3-place decimal ±.005 · Angular ±.1° |
| Organization | TEAMLab |

## See Also

- [[cnc-1]] — lab instructions for making this part
- [[cnc-mill-1a]] — Part A companion drawing