Omnibot 2000 Arm Joint

Do you have an Omnibot 2000 robot - http://www.robotsandcomputers.com/robots/omnibot2k.htm - whose arm is just hanging limp at his side? More than likely, the problem is a broken arm joint. You can see where this common-failure part breaks in the second and third photos. I glued mine back together long enough to make a silicone mold from which I then cast a functional, albeit ugly, replacement years ago. Now that I have a 3D printer... why not use it for something useful?

This replacement is identical to the original with one exception - the top part is designed with more material to aide in strength. In the photos, I guess I should point out that the purple piece is the printed replacement whereas the grey piece is the original.

This is an impossible piece to locate and as far as I know, there are no other sources for either the joint itself or a 3D model. I am offering this to the public for the time being at no cost, but I reserve the right to pull this from the marketplace a