[Cura 3.0.4 Removes Internal Geometry]

On 11/14/2017 at 4:25 PM, kmanstudios said:

I took a look at the file. It is a well built model. Turning off "Union Overlapping Volumes" left the internal voids intact.

 

This worked for me! I've been searching for hours trying to figure this out! Thanks so much for the tip! It has made my day! :)