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

Twelve shallow scallops, the edge of a coin. Grips with a fingertip and stays quiet on a front 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 | 1.7 cm³ | 2.2 g | | 20 mm | 13.6 mm | 3.0 cm³ | 3.8 g | | 25 mm | 13.6 mm | 4.1 cm³ | 5.2 g | | 30 mm | 16.2 mm | 6.2 cm³ | 7.9 g | Bore measured on the finished solid: 4.20 × 4.20 mm. ## The fitting…

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