Slightly modified oriolmachin's Keycap Case to fit on the 235 x 235 Ender 3 bed. It's a tight fit, but prints fine (I've done 6 trays and working on the cases now).
The cases you will need to rotate to an angle in your slicer. I've put a 3 tray and 4 tray version up. Both need to be rotated to suit.
Same settings as oriolmachin's case/trays.
Print Settings
Printer brand:
Creality
Printer:
Ender 3
Rafts:
No
Supports:
No
Resolution:
0.28
Infill:
0
Filament brand:
eSun
Filament color:
Black
Filament material:
PLA+
Notes:
Using a skirt on a PEI bed, although the skirt is probably not needed for this size.
The author hasn't provided the model origin yet.