this is exactly what i was going to print these for :D more specifically this one http://www.thingiverse.com/thi... :)

Judging from the maze in your picture, you built my derivative Thing http://www.thingiverse.com/thi... in which I had swapped the wrong-turns and right-turns as much as I could. (Compare the pictures carefully and you'll see the differences.)

I encourage you to build both versions and compare whether the derivative maze is harder, easier, or just different!

oh sorry that happens when you have too sharp corners in the gray scale image and the inset algorithm screws up...either fix the inset code or add some gray scale gradient to avoid sharp cornered small lines that get inset weird...i still love this box idea and hope to find some time to fix the inset code to get rid of these excepion for real but its a little tricky maybe it would be better to uses some existing 2d library for the inset because basic inset is almost trivial (some 2d linear equations need to be solved) but the cornercases complicate everything and well I did not manage the first time I tried...maybe the community is faster than me? ;)

I intermittently encountered the same error, plus occasional winding errors, when I tried to repair my derivative. The errors go away if you * disable the second polyhedron, but I can't see anything wrong with the Python script that generates it.

Eventually I found a workaround by deleting the second polyhedron and replacing it with a copy of the first polyhedron prefixed with "translate([0,0,0.01]) scale([0.94,0.94,1.0]) " to cut out the hollow interior and offset it very slightly to avoid manifold errors. This gives approximately the sa
me 1.5mm wall thickness as the original Python output.

Another workaround is to delete the second polyhedron with "cylinder(h=80, r=23.4 );" to build a smooth interior wall. That gives a model whose walls vary from 1.5mm to 3.0mm in thickness due to the contours of the maze.

excellent idea...you are right they ARE hard to grip and printed knurled things look amazingly beautiful. I was never really satisfied with the boring cylindrical surface.

I might actually do this next xmas...but maybe the community is faster than me ;)

Set extra shells to 0 in the Fill module.

no just adapt the pixel image you feed to the python script. it warps around 3 times the way the python code is now but this is a number you can modify just like the picture :)

run it in the command line like this (I think this should even work under windows although I only tested it under ubuntu):
python mazebox clean2 stable.py
&
gt; myBox.scad

You might want to adapt the variables (in the python code):
* "rn" (three times the x resolution of the image),
* "hn" (the y resolution of the image)
* "depth" (the image file)
* "part" (which part to generate)

It's a little bit messy because I had to finish this in time for xmas and did not clean it up afterwards...anyway if there are more questions please ask :)

It worked alright. I'm guessing that the plastic parts shrink a little because my starch print didn't fit together until I sanded and filed it a little.

I forgot it in the first place but II uploaded it now

thanks! in the xmas holidays i want to try out many new boxes with different patterns form other images...once it's programed it can be executed may times..the joy of parametric modeling ;)