Do-Nothing Machine

thingiverse

The Trammel of Archimedes is an intriguing device that traces elliptical paths, often called a "do-nothing machine" or "smoke grinder." Easy to print and assemble, it offers hours of captivating motion. A Wikipedia .gif showcases its functionality (http://upload.wikimedia.org/wikipedia/commons/9/9f/Trammel_of_Archimedes_Large.gif). To maintain simplicity, the arm lacks additional features like a handle or pen holder. However, version 2 of the base has been improved with fillets on external faces to eliminate sharp edges and smoothen internal corners for enhanced motion. Print one base, one arm, and two shuttles; use multiply for shuttles' precision printing. Some file adjustments might be necessary for rough spots on tracks or shuttles. Enjoy the mesmerizing motion by assembling at your discretion and cranking away.