About this 3D model

This is a tour de force #backtoschool set! Make a very fancy Ruler to the exact specifications you want. The pencil case opens to reveal the heart warming Geneva Mechanism! And who does not want a trapped sphere pencil topper. I do so I made one. video here of box http://youtu.be/cQUxT1wyrOY also to help educate your friends and family, best I have found under 2 minute slightly amusing, simple & straight forward explanation of home 3D printing, (made by and for schools): http://www.youtube.com/watch?v=YpHv19jdloI