Drum knob for D-shaft 5.0 mm - 4 sizes 16/20/25/30 mm, no supports

A tall drum with round ribs. All that shell area is what makes a slow, fine turn possible - volume, feed, focus. For the 5 mm shaft with a flat at 4.52 mm - the NEMA 17 stepper shaft, the one on your printer's Z axis and extruder. Bore built to 4.6 mm. A knob bored for 4.0 wobbles on it; measure across the flat if unsure. ## Sizes in the download All 4 diameters, same shaft fitting: | Diameter | Height | Volume | Weight in PETG | |---|---|---|---| | 16 mm | 15.6 mm | 2.4 cm³ | 3.1 g | | 20 mm |…

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