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What do I do with the contact lens bottles if I use the 3ft PVC pipe?
How to make a RPG-7 prop.
okay so theoretically, lets say i wanted to create a version of this, that i can adjust the tune on the fly, while playing, much like a trombone, or a slide whistle... should I make the chamber i blow into the part that gets larger, or the pipe that the final sound travels out of after the membrane? I am really not sure.
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