I am using the Polybox for storing and using my filament but the way the big 6mm ptfe tubes are attached to the box are really poor.

To fix this I designed an adapter to connect the 6mm ptfe tube to a pc6m10 or pc4m10 pneumatic connection.

The hole being 8 mm in the box, the adapter consists of a bottom part M8 screw with a hole inside connecting to the top part receiving the pneumatic connector.

So you can use either 8mm tubes or 4mm !

=> Update : Changed the tolerance of the screw assembly, and now it is way easier to screw in ! 

Update 2 : added a version for 3mm filament. 

Print instructions

Rafts:
No

Supports:
No

Resolution:
0.15

Infill:
100%

Filament_material:
PLA