Example of metal Oloid

How to Model a Oloid in FreeCAD. In this beginner friendly FreeCAD tutorial we dive into the fascinating world of mathematical geometry by modeling an Oloid. Discovered by Paul Schatz, the Oloid is a unique 3D shape that rolls in a perfectly straight line while its center of mass rises and falls,making it a favorite for 3D printing, desk toys, and energy-efficient mixing applications. We explore two distinct workflows to achieve the most accurate surface area possible, comparing the standard Surface Workbench with the powerful Curves Workbench (Gordon Surfaces). Products in video (Amazon affiliate Links) *************************************** Silks PLA : https://amzn.to/4qCXIXE Example of metal Oloid : https://amzn.to/3NsTX8K *************************************** Wiki Image Attribution: By Thinkingarena - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=46517663 https://en.wikipedia.org/wiki/Oloid 🕒 Video Chapters 0:00 - What is an Oloid? (Properties & Physics) 1:10 - Project Setup and Geometry Rules 1:53 - Workflow 1: Sketcher & Part Workbench 2:44 - Using Construction Geometry & Constraints 4:04 - Splitting Edges for Precision 5:13 - Drafting & Cloning the Perpendicular Plane 7:04 - Surface Workbench: Filling Boundary Curves 8:36 - Mirroring & Joining Surfaces 10:41 - Converting to Solid & Surface Area Check 12:28 - Workflow 2: Curves Workbench (Gordon Surfaces) 13:38 - Creating a Network of Curves 15:20 - Generating Parametric Gordon Surfaces 17:49 - Accuracy Results: Surface Area Comparison 18:27 - 3D Printing Tips (Supports & Silk PLA) 🧠 Key Concepts Covered Oloid Geometry: Learn the math behind the shape (Two circles where the center of each lies on the edge of the other). Surface Area Accuracy: We verify our model by comparing the surface area to a sphere of the same radius Multi-Workbench Workflow: Sketcher: Using the M key to toggle arcs and polyline modes. Draft Workbench: Utilizing clones and snap tools for perfect alignment. Curves Workbench: Installing and using the Gordon Surface tool for higher precision. 3D Printing: Approaches for printing curved geometries with Silk PLA. #FreeCAD , #CAD , #3DPrinting Journey with me and Patreon https://www.patreon.com/mangojellysolutions Donate: https://ko-fi.com/mang0 https://www.paypal.com/paypalme/darrenbestone Udemy: Freecad Ultimate Beginners Extended Version https://www.udemy.com/course/freecad-ultimate-beginners-extended-version/?referralCode=F7A41AFE83C33AD267CB Subscribe: https://www.youtube.com/channel/UCUWhaOxsRk_5oPPq00_Y7Dw?sub_confirmation=1 Browse my Redbubble Shop: http://MangojellyLabs.redbubble.com Blog: https://mangojellysolutions.blogspot.com/