Collapsible cup

thingiverse

This model is thoroughly waterproof, even after being folded multiple times - between ten and twenty folds to be exact. Its dimensions in the STL file are quite compact: thirty millimeters tall and thirty millimeters in diameter at its top. You can easily scale up this design by adjusting the height and diameter in the included FreeCAD file, although keep in mind that scaling the entire model might make it too rigid for folding purposes. **Work In Progress:** * Currently, the design does not maintain a collapsed state on its own. * The uppermost ring of the model folds poorly.