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I absolutely love this idea sadly it did not work well for me. I printed on the M3D which I know is an entry level micro 3D printer but I printed it at full size.
The over all print looked amazing for both top and bottom (printed them separately) but once I put them together it was very tight sliding it on and it would not turn.

I did set my print settings at nearly full quality so I will try again at the most extreme quality and hope for the best :)
If that doesn't work then for me deeper groves and a bump that protrudes more would probably have worked.

Great design though love it I would love to see more of these ideas :)