Thread: Blow and cap
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Old 11-07-2019, 11:32 PM
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Scott Dunahee Scott Dunahee is offline
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Location: Madison, WI
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when I taught classes, I would put a squishy foam (disposable) earplug in the business end of a cold blowpipe. Then I had the students practice blow and cap over and over again until they could hear a consistent pssh when they released their thumb from the blowpipe near their ear. No noise, you didn't do it right. Rinse and repeat. Your furnace doesn't even have to be on for this one.



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