Internal Perpetual Wedge
You can find a video about this here https://youtu.be/pxeQfavEhaA
the gears might be a little stiff on first assembly give them a few twists to loosen them up - depends on your printer
You can find a video about this here https://youtu.be/pxeQfavEhaA
the gears might be a little stiff on first assembly give them a few twists to loosen them up - depends on your printer