Drum knob for Knurled shaft 6 mm, 40 teeth - 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 fine 40-tooth knurled 6 mm shaft. Four manufacturers dimension this one identically: 6.0 mm over the teeth, knurl 7 mm long. Press-fit. ## Sizes in the download All 4 diameters, same shaft fitting: | Diameter | Height | Volume | Weight in PETG | |---|---|---|---| | 16 mm | 16.6 mm | 2.7 cm³ | 3.4 g | | 20 mm | 19.0 mm | 4.2 cm³ | 5.3 g | | 25 mm | 23.8 mm | 6.8 cm³ | 8.6 g |…

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