After sometime our wash basin filter at home deteriorated and need a new one. I can't find it in nearby hardware store or the type and size just does not match. So make this one in OpenScad and thought to share it just in case anyone need it it. You can modify the scad anyway. You need to print the STL with support for the top overhang area. Alternatively you can regenerate the STL from the OpenScad with support structure enabled.