Dome knob for Round shaft 3/16 in (4.7625 mm) - 4 sizes 16/20/25/30 mm, no supports

A dome over a knurled band. The dome is deliberately flatter than a hemisphere: a true half-sphere would print at 65 degrees of overhang and need supports. 3/16 inch is 4.7625 mm, not 4.8 - the bore is built on the exact conversion. A round shaft has no form fit, so the grub screw does the holding; tighten it onto the shaft, not onto the plastic around it. ## Sizes in the download All 4 diameters, same shaft fitting: | Diameter | Height | Volume | Weight in PETG | |---|---|---|---| | 16 mm | 15…

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