After using the new mill a few times, I felt that using the stock handle to move the knee when milling slots and the like was just not to my liking. The hand drill would not work here either. A small handwheel was needed. I was able to modify the existing castellated nut to use with the handwheel as well as the drill chuck. It is a simple operation to go from stock handle, to drill chuck drive, to the small handwheel.
The "rim" of the handwheel is a 4"dia, 1/2" thick piece of steel, drilled and tapped 3/8-16 in 4 places. The 4 handles are 1/2" diameter, turned down and threaded on the ends to 3/8-16. Two press-fit pins in the hub fit into mating holes in the castellated nut. As a result the handwheel can be installed/removed easily and quickly. Enough torque can be generated by hand to move the knee incrementally, when changing depth of cut for an end mill. It is not practical to use the handwheel to raise or lower the knee a large distance however.
