Given that most screw caps for bottle and containers are made from polypropylene (in an injection moulding process), we thought we'd see if we could 3D print a screw-cap container using our modified-PP filament. Thanks to Thingiverse, a design already existed (designed by nophead www.thingiverse.com/thing:84). So we printed it with F43 TOUGH filament, using 0.3mm layer height and 100% infill.
Not only did it print well, the container ended up being watertight! Here's a short clip for demonstration: