Splitable DUET Laser Filament Bracket for Bowden Tube Printers

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I created a video showcasing the advantages of this design: https://youtu.be/RmZ7aJYvWLc. In that video, however, I didn't mention one crucial detail - I employed a Sharpie marker with an exceptionally fine tip to completely paint the chamber of the print black. For threading PTFE tubing into M3 nuts, I recommend checking out this technique: https://youtu.be/LQDa5_xappU?t=25m53s. Personally, I prefer reaming out the tubing after it's been threaded into the nut. This step is essential because the act of threading causes the tubing to compress, thereby reducing its internal diameter and restricting filament flow. By reaming it out, you'll be good to go.