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Very useful. Thanks.
how about a pipe system that has bends and open ends? I tried this method but it doesn't work.
did you try to close one opening of the pipe?
![일상 속 기분 좋음 [Proto disco meme]](http://i.ytimg.com/vi/DwmEIaZ7XGQ/mqdefault.jpg)
Very useful. Thanks.
how about a pipe system that has bends and open ends? I tried this method but it doesn't work.
did you try to close one opening of the pipe?