Wind Zug
Soerser Tal Aachen/DEThe spindle rotates on its base like a train wheels on its rails. The spindle rotates on two aluminium cones so the loss by friction is insignificant. The spindle remains on its circle line just because of the shape of the cones. If there is a tendency to one side, one of the cones rolls over a bigger diameter and the spindle will be guided to the middle again.
See also: 
[11.5 MB]
Wasser Zug
Essambling in Taiwan
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