The objectives to fit all digits from 0 to 9 to fit in the base.
It is quite a challenging brain teaser, do not expect to solve it too quickly.
The files are separated into the digits, the base and a cover to conveniently store everything away.
Originally I created the files to be used by a laser cutter, I extruded everything so it can be 3D-printed as well.
The author remixed this model.
The original puzzle was designed by Martin Watson of UK.
I digitized it, and made it compatible to be 3D-printed and to cut-out of wood by a laser.