Steam Train Whistle
Description
This steam train whistle has only 2 tubes. However, the choosen geometry generates suitable overtones that ensure the realistic sound. The whistle can be blown softly or loudly. Naturalistic sound, easy and quick to print. Less than 10 grams of filament required. Print with 0.4 mm line width and 0.2 mm layer height. And don't print too fast, a whistle needs sharp edges. If you want a nice dual color print, change filament at layer 6 and 36.
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