[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"learn-glossary-wd40":3},{"id":4,"title":5,"aliases":6,"body":9,"category":26,"definitionShort":27,"description":15,"disciplineTags":28,"extension":29,"meta":30,"navigation":31,"path":32,"relatedCards":33,"relatedTerms":36,"seo":41,"sourceRef":42,"stem":43,"term":44,"__hash__":45},"learn_glossary\u002Flearn\u002Fglossary\u002Fwd40.md","Wd40",[7,8],"wd-40","wd 40",{"type":10,"value":11,"toc":22},"minimark",[12,16,19],[13,14,15],"p",{},"The WD40 was named for a 1980s tailwater fishery, not the lubricant. It's the simplest emerger in the box — a thread body, a tiny tail of mallard fibers, and a few of the same fibers folded over the thorax as a wing case. That's it. No hackle, no flash, no dubbing.",[13,17,18],{},"The minimalism is the point. On hard-fished spring creeks and tailwaters, trout learn to refuse anything that looks \"tied.\" A WD40 reads as a real emerger because there's barely anything there to look fake.",[13,20,21],{},"Sizes 18-24 are standard; black, olive, and gray cover midges; baetis blue for BWO hatches. Fish it on light tippet (6X minimum), dead-drift, hanging in the film. Most takes are barely a swirl — strike at anything that hesitates near where the fly should be.",{"title":23,"searchDepth":24,"depth":24,"links":25},"",2,[],"fly","A tiny midge and baetis emerger (sizes 18-24) tied with mallard fibers for a tail and wing case over a thread body. The tailwater go-to for selective trout sipping in the film.",[26],"md",{},true,"\u002Flearn\u002Fglossary\u002Fwd40",[34,35],"reading-the-surface-film","reading-rises",[37,38,39,40],"emerger","surface-film","midge","bwo",{"description":15},null,"learn\u002Fglossary\u002Fwd40","WD40","Rcourk5RUW_XyHrf6_en2Sd1EpH9lmEbyEBnbWPDRmg"]