About this 3D model

I am loving the spheres in the new TinkerCad! This is a companion piece to a version I made on my rapid prototyping machine years ago. It can be seen on my Deviant Art page. (http://bohnded.deviantart.com) This part was made with Tinkercad. Edit the part online at: https://tinkercad.com/things/clsEzHWwCvZ