Ryszard Grenda writes: Hello Matthias. I finished building my marble machine "Archimedes 2", inspired by Paul Grundbacher's machine. The machine is 150 cm tall and 57 cm in diameter at the base. The lifting chain has 20 links and is 3 meters long. The Archimedes screw is 100 cm long. Tower with moving ramps is 57 cm high.
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