Mug with ridges inside - April Fools Cup

Summary This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/iIY15uBsiX5 This was an exercise in learning to use Tinkercad. It's a mug with a screw thread in it. It's supposed to be hard to drink from, but actually it's easy. Check out my competition entry at https://community.makezine.com/share/jak-s-hub/what-s-an-etruscan-urn-1b579e. Print Settings Printer: 3DStuffmaker Prusa Explorer Rafts: No Supports: No Resolution: 0.25 Infill: 20% Notes: Printed the screw thread very well without supports.