Slip on lens cover for the Classic Argus C3 commonly known as "The Brick". Easy print, however I do recommend a raft to ensure the lens cover prints flat. The cover diameter is oversized to allow for 2mm craft foam to be super glued around the inside to get the slip on fit. A picture of typical craft foam is in photos. 25% fill worked fine for me.
Argus_C3_Lens_Cap.stl | 24.9KB |