Equalization Training Tool

A simple, adjustable tool for training pressure equalization between the middle ear and the environment. If you don't know what you're doing, ask you diving instructor before use. Original design by Nikolai Ovcharov. Check out his other cool designs at instagram.com/ovcharovnikolay!UsageScrew both parts together and attach a party balloon over the bottom end. Use the screw mechanism to adjust air flow resistance.PrintingThe provided Bambu Studio project file (.3mf) already has all the ri