Rubo for Umbra
grabcad
Rubo assists in tearing paper towels by rotating its head when pressure is applied. Its design is inspired by a spinning top's movement mechanism. The center rod can be lowered through the platform, where it converts to rotary motion via a helical slot and pin system within the arm-attached ring. Upon releasing pressure, a spring returns the rod to its original position while preventing arm rotation with a ratchet-like mechanism. However, the CAD files do not currently include this intricate mechanism, only displaying the overall setup.
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