Dry Box Filament Feeder

These are designed to be glued to any box. I used silicone on outside edge and superglue on rest of face. By pressure PTFE connectors can be threaded on these. I designed then for the PC-4 M5 then drilled out the connector a little on screw end to prevent shaving: https://www.google.com/search?q=5mm+Male+Thread+4mm%2F0.16+Push+to+Connect+PC4-M5+For+PTFE+Tube+3D+Printer+Connector&oq=5mm+Male+Thread+4mm%2F0.16+Push+to+Connect+PC4-M5+For+PTFE+Tube+3D+Printer+Connector&aqs=chrome..69i57j69i65.1668j0j8&sourceid=chrome&ie=UTF-8