Rolling Solids (Sphericons, Oloid, Meissner)

🌀 Rolling Solids Collection — Kinematic Desk Toys & Constant Width Bodies

Explore the fascinating geometry of kinematic rolling solids and bodies of constant width! This collection features precision-designed geometric shapes—from classic dual-cone geometries to complex mathematical solids—engineered for smooth rolling motion and clean 3D printing.

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If you enjoy this collection and want to support more free, high-quality geometric designs, please consider giving this project a Boost 🚀! 📦 What’s Included

- The Oloid: An organic, smooth solid formed from two perpendicular intersecting circles that rolls by contacting every point of its surface area. - Sphericon to Dodecasphericon: A full spectrum of regular and polygonal sphericon geometries (from $n=4$ up to the 12-sided dodecasphericon) that wobble and roll along distinct zigzag paths. - The Meissner Solid: A 3D body of constant width created by smoothing specific edges of a Reuleaux tetrahedron, allowing it to roll smoothly between two parallel plates in any orientation. 🔧 Assembly Required

To ensure optimal surface finish, peak rolling performance, and support-free printing:

- Split Geometry: Models are divided into matching halves so each side prints flat on the build plate. This avoids ugly overhangs, excessive support structures, or flat spots that ruin rolling dynamics. - Joining: All plates include locking pins, but recommend join using a small drop of superglue (CA glue).