Whistle with hollow BALL inside. Just free the ball and it works. Pfeife, Trillerpfeife. Up to 110dB
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I'Ve Designed A Whistle With A Hollow Ball Inside. You Have Just To Free The Ball And The Whistle Work. Just From The 3D Printer. I'Ve Tested The Whistle. Its Up To 110Db Spl And 2000-2400Hz Ich Habe Eine Trillerpfeife Konstuiert. Man Muss Nur Die Hohlkugel Lösen, Schon Funktioniert Sie. Ich Habe Die Trillerpfeife Getestet. Sie Erreicht Bis Zu 110Db Spl Bei 2000-2400Hz You Can Follow Me On Twitter Https://Twitter.Com/3D_Print_Ka 3Dhubs Https://Www.3Dhubs.Com/Karlsruhe/Hubs/Prusa-I3-200X200X200 Myminifactory Https://Www.Myminifactory.Com/De/Users/3D-Print-Ka I'M From Stutensee (Karlsruhe, Germany)
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