Cetus 3D Extruder

I was frustrated by the original Cetus3D extruder design. I had to take it apart to ensure the filament was feeding properly. This design allows adjustable filament feed tension, quick release of the filament and an open design to allow viewing the filament during printing. The spring has a 3:1 advantage over the pressure bearing. It has been tested to print with PLA and PC-MAX, but has not been tested with other filament types such as ABS or flexible filaments. The screws and spring can be purchased from ACE Hardware or Amazon. The bearing can be obtained on Amazon. Please provide feedback and suggestions for improvement.

Four pieces are required to be printed:
1. A new extruder PCB enclosure that moves the mounting from the face of the extruder motor to the holes on the top. Use the screws that were used to secure the board to the top of the NEMA motor.
2. A spacer attached by two screws to the face of the extruder motor. This provides a smooth surface for the lever arm to rotat