This is a simple case I designed for the Orange Pi Zero 3.

You will need to print the base and select the top cover of your choosing. Personally, I like the external antenna versions. Simply run the antenna wire in the slot above the SD card and place the antenna in the retention slots.

Required Hardware:

• 4x - 20mm M3 Socket Head Cap Screws
• 4x - M3 Nuts

Print settings:

• Layer Height: 0.2mm
• Wall Thickness: 1mm minimum
• Top/Bottom Thickness: 1mm minimum
• Infill: 100% (recommended)
• Avoid Crossing Perimeters (Combing): Enabled (reduce stringing in hex pattern)
• Supports: I recommend supports only for the bolt/nut recess holes.
• Adhesion: If you have poor adhesion use a bit of glue stick

Modification requests may be entertained. I am considering adding additional GPIO/Debug UART Access, Heat-Set insert versions, etc.

Please post your makes and let me know how it works out for you! 

~~~~~~~~~~  Update Log  ~~~~~~~~~~

8/13/2023 -Modified extrusion mount geometry to work with V-Slot + T-Slot + Easier Printing

8/5/2023 - Added options to mount to 3D printer v-slots with M3 or M4 8mm bolts

8/4/2023 - Added thicker HEX pattern for those using nozzles larger than 0.4mm