Here's the current state of whistle model for anyone who wants to print one. Open to feedback, although my cad skills may not be able to implement some things.

https://www.printables.com/model/1569085-zipper-whistle

#3dPrinting #whistles

@mycotropic I saw some on 3d printing website and had no idea what they were. I've since listened to one and, well, that is strange. ":^)

https://www.printables.com/search/models?q=death+whistle

@akuake @bosquebill
I tried whistle out on squirrel crawling up feeder and it did NOT pause on way to the forest.

@czarbucks Here's an "x-ray" view of it hooked to puffy jacket zipper. The program that readies this for printing estimates about 8 cents worth of filament. Might try to make one as a single chamber, it would be about the width of the zipper pull or even a little narrower.

@bosquebill Oh, boy, not sure about that, it is really piercing. I haven't worked up the nerve to blow it full blast anywhere.

@akuake I think so? I'm doing a PLA print now (yellow was PETG) to see how it does on the overhangs. I'll post a link to the model once I upload it.

I was looking at 3D printed whistles the other day and wondered how hard it would be to make one that just snaps onto a jacket zipper, so you'd always have a whistle with you. Looked at someone's 3D whistle to come up with basic design, experimented making different size chambers for multiple tones and futzed around with variety of ideas to attach zipper pull vs. easy printing. Spoiler alert, most zipper pulls are 2mm thick and 12mm wide, except all of those that aren't!
#3dPrinting #whistles

@dillyd You've got a little snow and drifting going on there!

@Bikil They're great!

@mtechman Thank you! Years of looking into every storm grate I passed eventually paid off.

#MagicInTheMundane