Interesting acoustic effect

Northern

Seeking SMB
Forum Supporter
So some of you may already have known this, but I was surprised when I read it, so I gave it a shot:

Apparently close-celled foam acts as an acoustic amplification chamber rather than a sound dampener when a rattle is encased in it!
For example, I melted a hole through 6mm foam with a hot bodkin and pushed the little 1.5 cm rattle inside for this bass-sized wiggle bug head.
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The rattle sound is at least 3X louder than the same rattle loose, or pressed between my finger/thumb pads!
The completed fly should be quite loud as this guy wobbles side to side on the retrieve
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Same for this articulated swimming dragon. The bulb at the end of the tail (yeah, yeah, I'll pretty it up on the second try! The bass won't care 😉) is 1.5mm foam wrapped around the rattle, then inserted into heat shrink tubing with a drop of superglue, and then shrunk onto the mangum tail.
Bonus that it should waggle, rattle, and float while swimming. Looking for hogs with that one!
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Second try at shrink tube tail
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Wait... will Central WA bass avoid a rattling snakey thing? 🤔
 
Only small bass will avoid the sound. Great for you since you only catch BIG bass.
 
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