Star knob for Round shaft 5.0 mm - 4 sizes 20/25/30/36 mm, no supports

Five soft lobes. The shape you reach for when a knob has to be turned hard but must not cut into the hand. For plain 5 mm shafts - the round NEMA 17 stepper shaft, and 5 mm push-on spindles. Held by an M3 grub screw that cuts its own thread. ## Sizes in the download All 4 diameters, same shaft fitting: | Diameter | Height | Volume | Weight in PETG | |---|---|---|---| | 20 mm | 15.6 mm | 2.3 cm³ | 2.9 g | | 25 mm | 15.6 mm | 3.9 cm³ | 5.0 g | | 30 mm | 15.6 mm | 5.6 cm³ | 7.1 g | | 36 mm | 18.0…

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