Hephestos 2 - Filament Filter Box (PTFE Tube)

thingiverse

This is an Inflatable Filter Container. Simply insert a piece of Foam, twist on the cap and you're done. It's a clever trick, because the FilterContainerCap.stl are actually 2 Objects in one File. I had to figure out if it was possible or not to print it as a single unit. After printing, you can crack it slightly and the ball joint functions perfectly. (At least from my experience) I used Hex Head Bolts in M3x10 dimensions (4 times)