This is a variant of my Shapely Arduino Enclosure (W.I.P.) . I realized that there was a lot of wasted material on that version. This version attempts to reduce the amount of material used. I have successfully printed the top piece (see "Tinkered by" for STL). I made significant adjustments to the bottom piece, but I will have to print that tomorrow night.
The bottom piece (Perforated Arduino Enclosure Bottom ) now has significant modifications to reduce the amount of material and improve snap fit function. Check it out, and let me know your thoughts! I hope to print it tomorrow.