This is a print-in-place fidget/stim toy that has 2 separate parts which rotate freely. It is covered in a knurled texture that feel good when pressed against the skin. Finally, it has a keychain loop, so that you will never have to worry about losing it!

🎉 Prints pre-assembled and without supports! 🙌 It's print-in-place, meaning it should work right off the buildplate! It is carefully designed with 3D printing in mind, so there shouldn't be any issues with tolerances, overhangs, or first-layer squishing.

Varients

• SpikeRoll
• SpikeRoll Mini

Free Benchmark Print this before buying to verify you can print without issues.

Basic Print Settings

• 0.2mm layer height (or 0.1mm, but other heights may not slice correctly)
• 100% infill
• No supports
• No raft/brim
• Designed for 0.4mm nozzles (but should work fine with smaller ones)

Advanced Slicer Tweaks

• Some slicers may require setting the top and bottom layer heights to 0, to avoid weak geometry on thin tapered parts like the center post.
  • I had to do this for S3Dv4.
• Requires bridging, which may need to be turned on in your slicer.
  • If it still doesn't bridge, make sure there is at least 1 bottom layer in your slicer.
  • S3Dv4 also requires at least 1 bottom layer for bridging to occur.
• Make sure your "Minimum Extrusion Length" is set to something small, like your nozzle width.
  • The defaults in S3D incorrectly prints the small gears as hollow.

Post-Printing Instructions This print is not delicate, and can simply be rotated/pried off the buildplate without much attention needed.

💖 Designed with FreeCAD! Thank you to the amazing FreeCAD community! 💖