About this 3D model

I will soon do a travel So I bought a camera (DSLR) for the occasion. But this summer I found that the camera is very heavy. And at the end of the day I felt like my neck was stiff. So I decided to design a support that I can attach on the straps of a backpack. Here it is http://youtu.be/Rr-QORDyOXA update 2014-09-07 http://youtu.be/MVUoe5bZkGk There is 2 other versions here: the 2nd version is here: http://www.thingiverse.com/thing:454364 and 3rd: http://www.thingiverse.com/thing:454381