Puzzle cube in a box

This is a 3D puzzle cube in a box. It seems quite easy but actually it is quite difficult to solve.

Printing tips:
- You may have to play with the scaling of the cube (100 - 101 %) in your slicing software to get the proper support layers between the cube levels. You need one support layer one layer apart from the top and bottom level.
- For me 101% cube and 101% box scaling worked best.
- Play with the scaling of the box lid to get a proper fit. For me 100% lid scaling worked best.