Hi all,
I’m sharing an open-source CNC enclosure project for LimeSDR USB.
GitHub:
What this case focuses on:
- Mechanical protection
- Passive thermal dissipation with thermal interface pads
- RF/control area separation and RF firewall concept
- Full SMA breakout support + laser marking file
Included files:
- top.step / bottom.step
- top.f3d / bottom.f3d
- Laser_Marking.dwg
- Pilot build photos and assembly notes
Manufacturing:
I tested a pilot build with JLCCNC/JLC-style workflow using STEP + optional laser marking DWG.
Assembly notes:
- Threads are not pre-modeled; user taps threads during assembly
- M4x30 for case halves
- M3x4 flat-head for PCB mounting
- Fan area supports 4010 (40x40x10), but passive cooling was enough in my RX use case (~34C)
Cable note:
For RF-side SMA-IPEX links I recommend RG113 75 mm. 100 mm can work but makes assembly harder.
Feedback on geometry/DFM is welcome.