Separate the two nails

When I was a little boy I had some of these puzzles, where You have to separate two nails and reassemble them. Some days ago I was offered the Youtube short [Separate the two nails](https://www.youtube.com/shorts/bGmmyj6ZEoM) at the channel of @HitZone22. For advanced puzzlers this shouldn't be a great challenge, but many people will need some time, or even give up ;-)

The goal ist, to assemble the 2 nails, that they are linked together as shown in the picture, and to disassemble them again without using any force.

First I tried to design a version that has square shaped nails, so it would be really easy to print, but then the original solution didn't work. Maybe I`ll also publish this version another day ;-)

[Update on 01/19/2026]
I just published my promised version [Separate two square shaped nails] (https://www.thingiverse.com/thing:7275818)