This will allow you to print via reverse-Bowden without taking the filament out of the drybox.

Mounting is done via three M3 socket-head cap screws and hex nuts. The length of the screws will depend on your container wall thickness with the flange requiring approximately 3mm additional length. For a typical Tupperware or Rubbermaid container, a 6mm screw should be a good starting length.

The flange is pre-threaded for a PC4-M10 Passthru fitting and has a recess to hold the tubing centered and captive. The reverse side is beveled to make inserting the filament easy.

The rear flange ("Back") may need support for the nut recesses, and a support enforcer STL is provided for that purpose. The outer ring of the enforcer is only so that the model centers correctly. See the included drawing for the locations and sizes of mounting holes required.