Swiffer Wet Jet Refill-mod
thingiverse
Print both parts without support. You'll need a rubber gasket as well, though it might work without one. I used a 32mm rubber O-ring (The actual ring itself is 3.46mm thick) It came from a Scuba diving repair set. "Divers O-Ring Kit: AS568-214" The threading is TIGHT, you'll need to spend 5-10 minutes screwing & unscrewing in order to wear them in. I used hot melt glue to adhere the Base to the top of the swiffer container after I popped a big hole in it. Make sure to completely clean the top so the hot melt sticks. You'll need to go back and apply more glue once you notice a few pin hole leaks!
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