A replacement water bottle screw cap / lid for standard metal drinking bottles and flasks.
I designed this to print in two parts so it is easy to print with no supports and get a good finish. Print both parts and the screw part will screw in to the handle part. Run a fillet of glue around the inside of the handle thread so that once the screw part is screwed in it will not come out again.
I was able to still use the old washer / o-ring for the seal.
I also used 4 outer layers and 30% infill to make sure it was solid. Prints well in PLA or PETG.
Prusament PLA or PETG