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Maxlvledc
3
Feb 29, 2020
Hello, I finally got around to making a review of the ToolFob, its lengthy but I wanted to be as thorough as possible. One thing I didn't get to say in the video (because it didn't exist yet) is the whistle is utterly amazing. Its so loud I think my ears are still ringing. https://www.youtube.com/watch?v=pORDCERy_M8
RNJohn
52
Mar 17, 2020
MaxlvledcI love this multi-tool fob but I can not make the whistle work at all. Mine is a beautifully turned titanium tube with a solid end piece and a wide open end piece. I have tried everything I can think of.
btboone
26
Apr 15, 2020
RNJohnThe trick is to plug the whistle into the hex hole with the open end up. Blow a strong stream of air over the open end, using the ToolFob as a chin rest to better center your airstream. The airstream gets divided into two paths; one that goes straight across the opening and one that goes in the body of the whistle. Eddys are created by the air going into the whistle since it has to turn around to get out. That sets up pressure waves that hit a resonance that we hear as sound waves. More air and better focused air will make for a louder sound. I included an instruction sheet with the whistles now.