Table of Contents Overview Step-By-Step The Corners The “ears” Everything Else A Template For The Leather Conclusion Overview A Guide To Rounding Corners and Edges in Tinkercad. Alternately, how I spent way too much time modeling a dice tray. Rounding corners in Tinkercad is way more trouble than it ought to be. It’s not actually hard, it’s just really time consuming and requires a lot of steps. Once you wrap your head around the general approach you’ll be able to round anything.