Box Fan Lever (Knob Replacement)
Description
The fan knob. You know what this is about. This part fits a 6.5 mm shaft, with two flats 5.5 mm apart. It's a tight fit, so consider printing at 105% scale or so. There is a slight (2 degree) draft on the inner diameter, so it can get a tight fit even if your stem is a little worn-down. This lever-type design makes it easier to operate: instead of needing to pinch a round knob with two fingers, you can easily operate this lever with just your thumb. You can flip it all the way from off into low in a single motion. Revel in your mechanical advantage, you've earned it!
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