<p>I’ve tested about ~20 whistle variations. Optimizing for blowing efficiency, filament usage efficiency, and dB output volume, the single color print of this one is the best I’ve seen so far: <a href="https://makerworld.com/en/models/2365496-minnesota-state-flag-whistle" target="_blank" rel="nofollow noopener" translate="no"><span class="invisible">https://</span><span class="ellipsis">makerworld.com/en/models/23654</span><span class="invisible">96-minnesota-state-flag-whistle</span></a> (based on <a href="https://makerworld.com/en/models/1642251-flat-signal-whistles" target="_blank" rel="nofollow noopener" translate="no"><span class="invisible">https://</span><span class="ellipsis">makerworld.com/en/models/16422</span><span class="invisible">51-flat-signal-whistles</span></a>)</p><p>If I’m ignoring filament usage efficiency, this one is much bigger and unmatched: <a href="https://makerworld.com/en/models/548070-triple-tone-extreme-whistle" target="_blank" rel="nofollow noopener" translate="no"><span class="invisible">https://</span><span class="ellipsis">makerworld.com/en/models/54807</span><span class="invisible">0-triple-tone-extreme-whistle</span></a></p>
- Post #972
- Next February 18, 2026 at 10:05:38 PM UTC
- Previous February 18, 2026 at 1:04:46 AM UTC
- Wed, 18 Feb 2026 14:36:00 GMT — Zach Leatherman
- Original on Fediverse