<p>I want to put a spiral lid on top of a container. When the lid opens, then the spiral mechanism will rotate into the container. Is there a name for this mechanism? If not, would something like this be possible?</p>

[{'answer_id': 12090, 'author': 'Mick', 'author_id': 3953, 'author_profile': 'https://3dprinting.stackexchange.com/users/3953', 'pm_score': -1, 'selected': False, 'text': '<p>No spiral lids that I know of. I\'m not sure how they would work, anyway. There are plenty of designs with hemispherical lids -- so-called "Venus" boxes. Check Yeggi:</p>\n\n<p><a href="https://www.yeggi.com/q/venus+box/" rel="nofollow noreferrer">Yeggi : Venus box</a></p>\n'}, {'answer_id': 12091, 'author': 'Davo', 'author_id': 4922, 'author_profile': 'https://3dprinting.stackexchange.com/users/4922', 'pm_score': 1, 'selected': False, 'text': '<p>It sounds like you\'re talking about an <a href="https://en.wikipedia.org/wiki/Diaphragm_(optics)" rel="nofollow noreferrer">iris diaphragm</a>. This has many parts that slide against each other, and would best be printed as separate parts, then assembled.</p>\n'}]
['https://3dprinting.stackexchange.com/questions/12089', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/20230/']