The 3D print files were moved to thingiverse a while ago, and it appears the link is fairly hard to find. We'll definitely want to fix that. Thanks for pointing it out!
If you go to the hackster page, and click the shopping cart icon next to the "3D Printed Parts" component, it should link to the thingiverse page containing all the part files for download.
Additionally we will update the 3D scanner site to include a link to the files. Should be live later today.
Alternatively, here is a direct link to the thingiverse page.