Custom Parametric Fidget Ring Maker

About this generator

Custom Parametric Fidget Ring Maker is a free MakerWorld customizer by Aonlaan that makes spinner rings: an inner band that sits on your finger and a textured outer shell that turns around it. Both parts print together as one piece, with no supports and nothing to assemble. It runs in MakerWorld's Parametric Model Maker, so you fill in a form in the browser instead of editing the OpenSCAD file behind it.

You size the ring by inner diameter in millimeters or by US ring size, then set the clearance between the two bands (the creator suggests 0.3 to 0.4 mm). The cover image shows about a dozen outer textures, such as Dragon Scale, Knurl, Flutes, Honeycomb and Chevron, and an update in early September added a texture scale setting. Ring width, outer wall thickness and bevel can be changed too. The result downloads as a 3MF or STL file, and the attached print profile puts the band and shell in two colors.

The listing went up at the end of August 2026 and passed 6,800 customizations in under four weeks. Several makers reported rings that would not spin, and the creator now tells everyone to switch Bambu Studio's wall generator to Arachne before printing. It suits fidget fans and anyone who wants a textured ring in an exact size. Selling prints is not allowed under its license.

What you can make

• Print-in-place spinner rings
• Rings sized by US size or inner diameter
• Textured fidget rings in about a dozen patterns
• Slim or wide rings with adjustable width and bevel

How to use Custom Parametric Fidget Ring Maker

1. Open the model on MakerWorld and click Customize
2. Pick a texture and texture scale, then enter your US ring size or inner diameter and a tolerance of about 0.3 to 0.4 mm
3. Adjust width, wall thickness and bevel if you like, then click Generate 3D Model
4. Download the 3MF or STL and set the wall generator to Arachne in Bambu Studio
5. Print without supports in PLA, silk PLA or PETG