Knob for Belt Tensioner (or what you want)
thingiverse
Beautiful super excellent professional knob for 3D printer masters. Print the external cylinder in TPU and internal in whatever you want :D For a perfect fit i recommend to use this cura setting: Experimental-> Slicing Tollerance-> Exclusive Print both pieces without supports making sure to place the end of the larger hole on top. Enjoy! :3 NB: I upload 2 version for 2 different brass trhreaded insert: M4 and M3 (Mattia cacacazzo edition). Choose according to the screw size of your belt tensioner.
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