I created a funnel to suck the air out of the filament zipper bags.
It fits on Dyson V10 or newer vacuum cleaner.
The release mechanism is a little bit stiff. I think this will be better than a lax fit.
Happy printing ;-)
I used this options:
0.4 nozzle
0.2mm quality
Prusament PETG Black
The author hasn't provided the model origin yet.