Cross knob with heat-set insert M3 - clamping knob, 4 sizes 30/36/44/54 mm, no supports

Four arms, teardrop section. The highest torque of the twelve shapes - for valves and clamps that are done up by hand. Bored 4 mm for a standard brass heat-set insert M3. Melt it in with a soldering iron at about 220 C and let it cool under light pressure. A printed M3 thread strips after a handful of turns; brass does not. ## Sizes in the download All 4 diameters, same shaft fitting: | Diameter | Height | Volume | Weight in PETG | |---|---|---|---| | 30 mm | 13.8 mm | 4.3 cm³ | 5.4 g | | 36 mm…

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