Nikon lens end cap F mount

Cover for the mount side of Nikon lenses. Tested with:
AF-S NIKKOR 16-80mm 1:2.8-4E ED
NIKKOR-S Auto 1:1.4 f=50mm
NIKKOR-Q Auto 1:3.5 f=135mm
Rokinon 1:1.4/85mm AS IF UMC

Designed in FreeCAD

Print instructions

Print with the open side up. No supports needed.