DanielKotes | Combination Lock - Invisible Build @DanielKotes | Uploaded January 2014 | Updated October 2024, 1 hour ago.
If you want to see just how simple of a design the combination lock really is, then watch me build it correctly on the first time with invisible blocks.
... Not at all serious, but still - I succeeded.

The link to the actual tutorial video: youtube.com/watch?v=-UGRsT6QX1M