Furled Failure

JG63

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nice poly yarn furled body - and poly yarn floofy wing - sinks like a stone 😅 specific gravity properties are all wrong - pretty fly otherwise - with a permanent position in the “experimental” box
 

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nice poly yarn furled body - and poly yarn floofy wing - sinks like a stone 😅 specific gravity properties are all wrong - pretty fly otherwise - with a permanent position in the “experimental” box
After a bunch of failures it finally got through my skull that poly yarn (specific gravity ~0.9) is insufficiently buoyant to float steel, even little hooks. Tiemco aero dry wing is a hollow poly fiber with a specific gravity of 0.6, but even that isn’t really sufficient unless used in volume (and it’s pricey).

As others have indicated, dry flies float because of surface tension (exploited by hackle), not low density.
 
Furled yarn also wicks up water like nobody's business...

That's why I use cylindrical foam for extended bodies and even for some non-extended EWC I tie for use in broken water.
 
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