Maze Box Redux

This is a makeover of the "A-Mazing Box" by wizard23 (http://www.thingiverse.com/thing:1481). This version is done in pure geometry on OpenSCAD and requires no images, perl scripts, or bump maps. Maze channels are cylindrical, so the action is very precise and smooth. The box's inner and outer surfaces are smooth. The downside is a very long compilation time in OpenSCAD. The STL files are posted for people who only want to print and have fun with the maze box.

Update Feb. 24, 2015: Created new version that defines the much more difficult inverted box, with the maze printed on the inside of the lid. Pulled the maze definition out into its own include file that can be used for either puzzle. Also uploaded a new, harder maze!

Update December 17, 2015: Noting that the last one I printed is way too tight, I rewrote the openSCAD to expand the lid and outer shell outward by one tolerance. New STL files for maze_box1.stl and maze_box2.stl should fit better.