We are two trainees in the Planetary and Robotics Laboratory at the European Space Agency and we built ExoMy, an educational mars rover:
It is completely 3D printed on an Ultimaker 3 and an Ultimaker 2, which took us around two weeks of print time.
We set up a website and a Github Wiki to guide through the whole build process.
So we hope to see some ExoMy clones soon :)