Neptune 3 Pro / Plus / Max Filament Sensor for Bowden PC4-M6

This model replaces the existing filament sensor housing of the Neptune 3 series filament sensor to have one with integrated M6 threads. This is not a perfect solution, as the preferred option is to use M6 heated inserts instead. I did not have any on hand, hence this now exists

Printing information:

• Print 0.12 layer height and slowly. Preferred orientation for better threading is on its side with the hole facing up/down, but can be printed flat with supports

Instructions on assembly:

• Use PC4-M6 to gently screw them into threads - this part is tricky as it could easily become crooked. This part needs to be as perpendicular as possible to avoid filament jamming
• Disconnect and unscrew the filament sensor from the printer
• Remove metal back plate and bottom plastic cover to reveal the insides
• Take out the components, and place them into the new housing
  • Check to see if all of the parts move as expected without interruption by pushing filament through to test
• Reassemble the filament sensor

License GPL-3.0 inherited from ElegooOfficial Neptune3pro GitHub repository

Used original STEP file for the printer, and took out just the filament sensor housing. Then I added in M6 threads on the sides, and widened the filament path entry/exit near the bearings