Updated version of dishwasher adapter, hoping that this time it works better (last one broke lol) and fixing the previous to use PETG instead of PLA
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Top side goes into a ½" NPT fitting, which fits a pull-down faucet.

Bottom threads are a “standard” faucet aerator thread, so you can attach a quick connect to it, letting a hose or dishwasher be attached.
("Standard aerator" is a 15/16"-27 thread, in this case it's a female thread, so you can attach a male aerator or adapter to it)