Studio 56 Function Calculator Cover

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.
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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.