Gears paradoxical- engrenage paradoxal

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I wanted to create a paradoxical gear after making spur and helical gears. The result is that it works . It's astonishing how the wheels rotate in the same direction. But it's definitely possible. The CNAM in Paris manufactured the first two-toothed gear, which they called paradoxical. I aimed to make a four-toothed one and it turned out well. Turning it is pleasant, printing was no issue, just ensure that the gears are properly aligned on the axes.