Whistle Ring Modified

thingiverse

This tweak is virtually identical to the initial design, except for an added protuberance on the inside where air escapes. This modification channels airflow precisely, producing the unmistakable whistle sound. In my earlier printouts, the noise was noticeably absent, but introducing this extra bump has yielded a clear whistling effect. I'm now considering experimenting with various sizes of these bumps to optimize the performance.