The base is impossible to print on around Z=83mm. The ring would print over an empty space and support is impossible to use because of the form of the base. The only thing I could do is adding an oblique chamfer under the ring so it could be suported.

You must download the files from the original 3d print to have all the parts for the ligthouse.

Print with: PLA Fill: 20% Support: NO (this times it's true)

https://www.thingiverse.com/thing:818093/comments