Large Maze Cube (and solution) [updated]

Randomly generated 3D maze cube in the style of [Oskar's Cube](https://oskarvandeventer.nl/bitsandpieces.html), generated using [MazeCubeGenerator](https://github.com/doing-science-to-stuff/MazeCubeGenerator).

This is an updated version of a [previous model](https://www.thingiverse.com/thing:4668547). Updates include the flat unfolded version for easier printing, and more complete circular end-point markers.

The first model (maze21_flat.stl) is an unfolded version of the puzzle for easier 3D printing.
The second model (maze21.stl) is the puzzle as it should be assembled.
The third model (maze21_solution.stl) is the solution to the puzzle.

For more information about this video see the [blog post](https://blog.doingsciencetostuff.com/2021/02/21/a-mazing-cubes-ii-the-flattening/).