Parametric Spike spinner

## Intro
A fully customizable stim toy inspired by the pain spinner on one of the other 3D printing sites. It comes with optional built-in bearings. This thing includes three example versions, a small one, a big one with bearings and one which is close to the original work which inspired this.

## Update 2025-11-03
To make the locking mechanism more stable, I replaced its central cylinder by a cut-off cone, distributing forces a bit more evenly.

## Bearings
The bearings require a quite precise printer to work properly. They work well on a BambuLab P1S with 0.4mm nozzle. They seem to help spinning for taller configurations only, but seeing as I already designed them, here they are.

## Assembly
Just stick the three or four parts together and twist the ends clockwise to lock the bayonet mechanism.

## Customization
As this thing contains a lot of small elements (mostly for the bayonet locking mechanism), the Thingiverse Customizr may be overwhelmed by it. I recommend rendering the scad-