Dished knob for Round shaft 4.0 mm - 4 sizes 16/20/25/30 mm, no supports

Low and dished, so the thumb sits in it rather than on it. Good where a knob must not stand proud of the panel. For plain 4 mm shafts, held by an M3 grub screw. ## Sizes in the download All 4 diameters, same shaft fitting: | Diameter | Height | Volume | Weight in PETG | |---|---|---|---| | 16 mm | 13.6 mm | 1.5 cm³ | 2.0 g | | 20 mm | 13.6 mm | 2.5 cm³ | 3.1 g | | 25 mm | 13.6 mm | 3.7 cm³ | 4.6 g | | 30 mm | 13.6 mm | 4.6 cm³ | 5.8 g | Bore measured on the finished solid: 4.20 × 4.20 mm. ## Th…

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