I like this really demanding puzzle :-)
But I don't like the fact that you have to glue the parts together first in the original design, and that this can easily lead to confusion due to the similarity, I created a version in which each disc is created as a complete part. This then has to be printed with support, of course, and the bottom is not printed as cleanly, but the part itself is much cleaner on the outside and also more stable. I was able to remove the support in a few seconds :-
HanayamaDiskA.stl | 1015.9KB | |
HanayamaDiskB.stl | 929.3KB |