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

Fine longitudinal knurling and a slightly domed top. The everyday knob: enough grip for a fingertip, quiet enough for 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 | 1.8 cm³ | 2.2 g | | 20 mm | 13.6 mm | 2.8 cm³ | 3.6 g | | 25 mm | 15.0 mm | 4.0 cm³ | 5.1 g | | 30 mm | 18.0 mm | 6.0 cm³ | 7.6 g | Bore measured on the finished solid:…

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