Filament Entrance Ball Pivot
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This is a filament entrance part I made for my enclosed printer. It allows the filament to enter the top and pivot around around freely without having large open hole. I have two different options for the ball fit for you to choose from. The tighter fit one worked fine for me. Make sure your tube doesn't fit too tightly. It can pinch against the filament if too tight. Ream it out a bit if needed. I used tape to help hold the tube in place. - I just have a short length of tubing here. Requires a ~20mm (~13/16") diameter hole. Or just use a 3/4" bit and file it out a little.
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