[MrForbes]

we seem to end up making a little arm to clamp onto the shaft, and attache the end of the arm to the robot part that moves. This year we discovered the magic of making the little arm of plywood. Seems to work fine, but this one is going to be replaced with a longer one that will clear the arm support plate.

The pot housing is mounted to a bent plate of aluminum. There is no connection between the arm pivot bolt and the pot.