Cam lock furniture. Not exactly certain how practical this is, but the internet rarely cares about stuff like that. Not sure why the lever is threaded either.
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Previously:
https://www.homemadetools.net/forum/...946#post102910
https://www.homemadetools.net/forum/...3061#post97953
https://www.homemadetools.net/forum/...8169#post86925
https://www.homemadetools.net/forum/...3750#post99929
https://www.homemadetools.net/forum/...826#post100118
https://www.homemadetools.net/forum/...3385#post98934
https://www.homemadetools.net/forum/...3522#post99314
https://www.homemadetools.net/forum/...3466#post78132
