MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
It's not my problem! I can only say that: instead of print 3 cases you could file the part more.
Anyway, my udoo inside would fit perfectly (I can just insert a photo for confirmation).
Your udoo is original?
Your printer is calibrated well?
P.S. I invite you to click on "I Made One" and post the pictures.
If you think that my project is not good, post one yourself, always remembering that it is licensed under "Creative Commons - Attribution - No Derivatives"