I have been looking forever for a while for a way to add a hand crank to my Minnesota B. it has no machine boss, and up to now I'd been out of luck. Last week Miriam had suggested the use of a tractor steering knob ( or suicide knob) to turn the wheel. Well I went in search of one in an auto parts store and found out they were illegal for cars, but they suggested eBay. The knob came today - it wasn't the black like it was shown (or new in box either) - but it worked out pretty good. Now the Minnesota can finally be counted as a useable machine. Yay!