Update 9/29/2014: I'm an idiot, I made the latest file that I uploaded here was the wrong size. Reverting back to V1.5 which actually works. Sorry. A sleeve cover I designed from scratch for the cheap studio 56 function calculator. This calculator was required by my prof for a math course I have this semester. I was very unhappy with the original cover so I made my own. Also my first time making something in AutoDesk 123d design.Make sure you print with supports, I had good luck with pillar supports. I used 20% infill with only 2 solid top and bottom layers and 0.3 mm layers.