i would try printing the filter part as a flat surface (without retractions) directly on the printer bed (only 3 layers maybe) and bend it later to become a tube ( like a “C”) i am not sure about petg, i did this bending with pla. hot water comes in handy and maybe a glas bottle. also prepare something to tighten where the ends of the C connect, a border without the small filter holes but some larger holes for something like cable ties or even a printed part for connecting the C edges.
well, before that and for generations, banks printing money was an acceptable way of governments to make rich people richer and all others poorer, so i can fully accept that stealing was learned from govs and the richies there. change how “the successfull” accomplish their successes and you can teach the kids how to live without stealing, keep abuse by gov and richies as is and all the theft is done exactly as ordered by govs and richies, no matter the age.