thumb z-crank

Yet another makerbot Z stage crank...

All the other cranks are nice (I like http://www.thingiverse.com/thing:1359 in particular) but they all have those pesky handles. And with the foldable crank, every now and then I forget to fold it and it runs into something.
Also, I found that I wasn't using the handle that sticks up -- I'd just use the length of the crank for leverage and push it around with my finger.

So, this crank is a little bit longer than the foldable crank when folded, and i