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bellinghamfoundry

Levavasseur Whistle

by bellinghamfoundry Oct 8, 2015
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Sadly did not work for me :/ Ender 3, wood PLA, 0.2 mm and 30mm/s

This is a beautiful whistle. Mine did not work at first but you have to look closely at the cutaway picture and carefully remove ALL of the support material. After that, it works perfectly. I suspect that those who cannot make it whistle did not remove all of the support material. Print with 0.1 mm layers, remove all of the supports and you will have a fine whistle. Carefully use a hobby knife to clean the annular passage around the inner cone.

Whistle is beautiful but unfortunatly doesn't work.

Printed one at 0.0875mm layer height, unfortunately didn't work.

I make one, and not work

This thing is seriously loud with a lung full of air going through it, needed a bit of postwork love to get it sounding good though.

Printed on Zortrax M200, .09mm, med infill. I the trimmed supports and edges with knife and carefully sanded the internal edges with 800grit, trying to keep everything sharp.

Just a thought - a pea in a ref's whistle creates a warble. Would one inside the chamber here have a similar effect?

I also could not get it to whistle. It printed very well but it just doesn't make any noise.

Proof of concept! Here is a video of my son using both the older and the new version of the whistle.
https://youtu.be/g06_zQeoPOc

Perhaps im doing something wrong, but I printed 2 of them out, one with support and one without and its a whistle that wont whistle ?????

Whistles are difficult to 3D print because the air passages need to be really smooth to keep the flow laminar. This whistle is particularly tricky because the airflow runs across the print layer lines (rather than along the layer lines like most whistles) and any surface roughness will disturb the flow. First make sure that you have cleaned up the whistle nicely and have removed all bits of support structure. I've found that cleaning up the lip edge with a pocket knife can help generate a clean sound. One other thing I discovered is that if you wet the whistle (and then shake it out) it often produces a sharper tone - just like licking your lips before whistling with your mouth. The theory is that the thin layer of water smooths out the surface to help maintain laminar flow.

Can you maybe put a video online, showing which parts need to be aligned or altered?

I too printed one with and one without support. Clearly the one without support failed during print, but the one with support came out without producing any sound at all.

Thanks!

I've just added another version (whistle_1.stl) which seems to whistle more reliably. Print it with 0.1mm layers so that the supports will remove cleanly. We're working on getting a little video posted soon.

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