This one folds, is sturdier than the non-folding one so you can fold it up and take it with you on travels.

Closed up the windows which makes for a longer print but sturdier part.

I uploaded an altered design on 21. Jan. 2013. This one fits better. Only the foot was altered.

Printing both parts laying on their side works best. I have printed the whole part at once laying on it's side. Works great. Just fold gently and the parts wil break apart so they can move freely.