One of our Nalgene lids lost in a heated altercation with our dishwasher. This is a clean-sheet design that functions and seals much like the original.
I printed this cap with the opening down and with supports (manual set) under the inside-center section of the lid only. Based on the filament selected the threads shouldn't need supports.
Please select an appropriate and safe filament for your application/use case.
If you feel so inclined, you can buy me a coffee:
The author marked this model as their own original creation.