Present: movable ball in a cube made with tinkercad with tutorial

Here is a small video how to create a ball in a cube for 3d printing. Follow the video. Please have a look at the shortcuts in tinkercad.

strg+d = duplicate
strg+l = allign
strg+g = group

After printing break the cross from the bottom.

Edit:
I added a second modell without edges. A tipp is to put a cent inside when its printed the half way. I seems to be a good present.

See my video here
http://youtu.be/HQfPVNmG1zI

The music was made with sonic pi, the best program to make m