The fellow next to David is a friend of his who helps him on Saturdays. This is a very important item and must be done exactly or else the wings magnets will not be in rejection when the top wing is resting above the bottom wing. If the wings go to far from one side to the other the magnets will come into attraction and lock up. The length of this movement is restricted by the pinions. There are spikes in front of all three cups as pictured in the photo.
Bottom photo shows the rectangle magnets being placed on the bottom plate of the machine.
You will notice there are no perimeter magnets at the very bottom or the very top leaving the two wings in between which has the perimeter magnets. The heavy looking rectangle piece on top of the cups is to hold the measuring triangle in place so that all magnets are placed exactly where they are suppose to go. These 3 cones are about 10' dia. It will make up the top section. Photos include Mr. Hammel, his workshop and a closeup of the magnets he is using.