[Update 2] Added the v.3 files. These are more stable and should open/close/shut easier.
[Update] Added the v.2 files. This version is crush-proof, should have less grind in the hinges and an easier to snap-in lock and on top the hinges on the top and bottom should print w/o overhangs.[/Updates]
This is a hinged disposable mask case with a separator sheet in the middle.
Use 1.75 mm filament as a hinge insert.
To assemble, simply fit pieces together, insert a filament string into the hinge holes and trim the ends as short as possible. No glue required.
You might want to file off some overhangs in the snap-lock.
Should be fine without brims or support. Just make sure you rotate them the right way round :D
Good results with PLA & PETG.
The author hasn't provided the model origin yet.