I had some trouble with my Hydor Prime 10 aquarium filter.
The threaded connector between the filter body and the hose valves broke after a couple of months.
So I came up with my own design.
This could be a difficult print so I suggest you to use these parameters:
~ Layer height: 0.15 or thinner (I went with 0.08)...the reason being that the thread is a custom one and it has obscene overhangs
~ Orientation: upside down, meaning that the threaded part should be on the top
~ Supports: absolutely yes, but only from buildplate
~ Infill: 100%
~ Material: mine are PLA but I would suggest PETG
Three years later update: Just noticed a small crack in one of the connectors. I think it's safe to say these connectors are pretty good
The author marked this model as their own original creation.