Blind Puzzle Box

** NOTE 3/05/2018 **
The_Fish has kindly remixed this design, fixing the tolerance issues noted in the comments below. Please refer to their remix here: https://www.thingiverse.com/thing:2770314
** End Note**

This is quite a large and complicated maze box. It's different to other maze boxes as you cannot see the maze as you are solving it.

I've included a couple of versions of the Outside maze section. Version A has a few solutions that can cause you to backtrack accidentally, and Version B has only one solution and lots of places to get lost.

I would love to see any makes of this, and any recommendations for future versions.

H x D: 165mm x 80mm

Tips are welcome!