This is a killer reference source and entry point for many applications and projects.
Capstan actuators = rope twisted around two drums for gear reduction, but with limited range of motion.
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Very interesting. Thanks! I wonder if it could be used as an axis in a 3d printer
Has already been done in different reprap machines. Even in commercial printers like the Fusion3 F400.
It works, but is not widely used
Creep would be a problem. But a fairly solvable one.