Spinning Puzzle Box

thingiverse

I designed this puzzle box based on this design: https://youtu.be/oRmc6zxbAOM. I haven't finished printing and testing it yet, so expect updates! The locking mechanism itself is not included. It's meant to use some nails that I have handy. They are 4" box nails with a flat 1cm diameter head and a shaft that's about 0.4cm diameter. The idea is to cut the nails to about 1.5cm length, then pause the print of the box when the holes are exposed and place the nails in the holes. When the print is finished, the nails will be locked in, and they'll be able to slide in and out just enough to lock the lid in place. To open the box, spin it around fast enough that the nails all move outwards (for physics enthusiasts - I know, the nails aren't pushed out; their linear inertia carries them away from the center of rotation). I'll update this description with photos and videos when I've successfully printed it. I might have to change the design significantly, so until there's confirmation that this works, print at your own risk! Edit: Version 1 didn't work great. I enlarged the 1cm channel so the nails can slide further, and I'm hoping this solves the issue. More updates are forthcoming.