This is a Filament Filter Box. Just put a piece of Sponge, screw the lid on and that's it.
It's a little gimmick, cause the FilterBoxLid.stl are actually 2 Bodies in one File.
It was a little challenge to find out if it's possible or not, to print it in one piece.
After the print, you can break it a little and the ball joint works pretty well. (At least in my Case)
I used HexCap Screws in the Dimensions of M3x10 (4 x)
0.2mm LH / 20% Infill (Little Support under the btoom hole).
0.05 to 0.2mm LH / 20% to 100%
I used multiple Process in S3D to print it with 0.2mm / 20% and switching to 0.05mm /100% when the Ball Joint begins.
I used manual Supports to place them directly under the inner Ball Joint. After the Print, you can break it a little and it begins to move.
I don't know if it's working with automatic support, so never tried.
It's only working if you have calibrated your printer properly otherwise it will bond together and not move. The Gap between the inner and outer ball is 0.2mm.