Description from DrJones (original maker)
"Inspired by a video showing a spiked cylinder ("Ouchie") that is intended to stimulate a bit of pain, which can actually help focusing better in certain conditions (like ADHD), I wanted to quickly design such a thing (but with hex spikes) and test what it's about. I showed it around and instantly two people wanted to have one, and I also got the suggestion to add a clicky to it - so I did. This is my first clicky fidget, but it turned out quite nicely.
I also made a version without clicky but with a cavity to be used as container.
Printing: Standard settings, though I prefer to tune down acceleration for the outer perimeter quite a bit. Good bed adhesion is required.
Assembly: See picture. If it doesn't turn well, try grabbing the knob with some pliers and turn the handle for some rounds to break it in."
The author remixed this model.
I added an area in the cap where you can run a keyring through to allow it to be attached to a keychain.