A simple parametric lens cap.
Just enter your filter thread diameter in the scad file and generate a fitting lens cap.
Not the best design but it works.
Example files are for 52mm filter thread (f.e. canon 50mm 1.8 II)
Print Settings
Printer Brand:
Prusa
Printer:
Prusa Clone
Rafts:
No
Supports:
Yes
Resolution:
0.1
Infill:
20%
Credits:
JohnClark