CNC Milling Machine
Compact CNC Mill for Precision Machining
The compact CNC mill is a 200 kg, 3+2 axis machine tool designed to finish cast or printed stock to tolerances within ±10 µm. Built on a cast aluminum bed with long-life ball-screw motion stages and a 24,000 RPM brushless DC spindle, the unit provides a 300 × 300 × 200 mm working envelope while drawing 500 W of power. Operating in the lunar environment, the machine leverages ambient vacuum conditions for natural chip evacuation while relying on durable drive components to maintain precision across a 20,000-hour mean time between failures and a 20-year operational lifetime.
Compact 3+2 axis CNC milling machine producing precision parts from cast or printed stock — finishing operations and tolerance achievement.
Purpose
Compact 3+2 axis CNC milling machine producing precision parts from cast or printed stock — finishing operations and tolerance achievement.
Context
Child of L2-MFG-MACH within the Lunar Ark system
Principles
- ▸3-axis CNC for prismatic parts
- ▸5-axis option for complex geometries
- ▸Working envelope 300x300x200 mm
- ▸Tolerance ±10 um achievable
- ▸Vacuum-compatible spindle and motion stages
Typical implementations
- ▸Industrial benchtop CNC mills (terrestrial)
- ▸Aerospace precision machining
- ▸ISS in-space machining concepts
Lunar considerations
- ▸Lunar vacuum natural for chip evacuation
- ▸Replacement tooling via L3-MFG-TOOL
- ▸Long-life ball-screw motion stages
Specifications
Functional
| primary function | Compact 3+2 axis CNC milling machine producing precision parts from cast or printed stock — finishing operations and tolerance achievement. |
| tolerance um | 10 |
| spindle rpm max | 24000 |
Physical
| mass kg | 200 |
| materials | Aluminum casting bed, BLDC spindle motor, Ball-screw drives |
| vacuum compatibility | True |
Operational
| power consumption w | 500 |
| thermal range c | -40, 70 |
| lifetime years | 20 |
| mtbf hours | 20000 |
Interfaces
Provides
- Precision-machined parts
Requires
- Spindle + drives (~500 W)
- Cutting tool inventory
Cite this entry
Lunar Ark Codex. "CNC Milling Machine" (L3-MFG-MACH-CNC). Retrieved 10 September 2026, from https://lunarark.com/entry/L3-MFG-MACH-CNC
Licensed CC-BY-SA 4.0. You may reuse and adapt this entry with attribution, under the same licence.