Panavise Jr Knob

I just got my Panavise Jr today, and I was disappointed by the knob on it. I wanted it to have a crank, so I made one in SketchUp, and this is what I got. I don't have a MakerBot, so if you make one, let me know how it works. (I'd also love it if someone would make one and mail it to me... PLEASE)