Door Peephole Cover

18mm diameter. Not that much to say about this one. It covers the hole.

Perhaps I can interest you in a thread on how to name the part: https://english.stackexchange.com/questions/247052/what-is-the-correct-term-for-the-viewing-hole-in-a-door

Printed at .2mm with PLA. It prints without supports okayish, but I reprinted it with supports for a more refined outcome.