Top 100!!!
Sorry I had to before this tread becomes 900 posts long,

It looks like Christmas really did come early this year.
As far as the part goes I question a few things that I don't think we can quite make out.
1. Do the spring pins depress are are they fixed.
2. If fixed do the pipes that they are on rotate around the center object so something can "screw" onto it to lock it (or the robot for that matter) in position.
3. I have worked with with this type of "locking mechanisms" in both applications, and both have different advantages and disadvantages.
Ok on a final note my grandparents just flew into town and for kicks I had to ask...."Grama and Grampa what do you think this is?" They said it looked like the "Spaceship Branson is flying people into space with" I have to say they are sorta close.
