A Dry Fly That Holds Up
Lesson: Stacking and Flaring Elk Hair — Cut Close to the Base
okay. last lesson we talked about why the elk hair caddis fishes so well on fast water. this lesson is the part that actually makes it float — stacking and flaring the hair, and specifically cutting it close to the base, which sounds like a small detail and is actually the whole thing.
i want to be upfront that this step gave me real trouble when i was learning. more on that in a minute.
why elk hair floats at all
elk hair is hollow. that's the whole trick. each hair has a little air chamber running through it, so a clump of it acts almost like a bundle of tiny pool noodles. that's what holds the fly up in riffled water without floatant doing all the work.
but hollow hair is also flared hair, naturally, because it's stiff and springy. when you clamp it in your thread it wants to flare out in a cone shape rather than lie flat like deer body hair does on other patterns. for the caddis, we actually want that flare. it's part of the silhouette and it's part of what sheds water. we just want to control it.
step one: stacking the hair
cut a clump of elk hair off the hide, about the diameter of a pencil for a standard-size caddis. don't worry about it being exact — you'll adjust as you get a feel for it.
put the tips into a hair stacker, tips down, and tap it on the table a few times. the stacker is just a little metal tube that lines everything up so the tips are even. this matters because the tips are what form the wing, and if they're staggered your wing looks ragged and doesn't sit right on the water.
pull the hair back out carefully — don't just dump it, or you'll un-even everything you just evened.
step two: measuring and positioning
lay the stacked hair against the hook shank and measure so the tips extend a bit past the bend of the hook. that's your wing length. hold that measurement with your fingers, don't let it slip.
bring it in over the top of the hook at the point where you want the wing to sit, usually right around two-thirds back on the shank, leaving room in front for the head.
step three: the flare
now here's the part people mess up, myself included for longer than i'd like to admit. you take two loose wraps of thread over the hair — loose, not cranked down — and as you pull the thread tight, the hair flares out around the shank instead of getting pinned flat.
if you crank the thread tight on the first wrap, the hair won't flare, it'll just get mashed to one side. so: two soft wraps, then tighten while the hair is still free to move. you'll feel it flare under your fingers. it's satisfying once it works.
no worries at all if your first few come out lopsided. everybody's do.
step four: cutting close to the base — the part that took me a week
this is the step i want to slow down on, because i spent a whole evening once, years ago, trying to figure out why my caddis wings kept flaring wrong even though i was doing the loose-wrap trick correctly. went through two different tying manuals looking for what i was missing. the answer, when i finally found it, was almost embarrassing in how simple it was.
i was cutting the butt ends of the hair too far from the base of the flare — leaving too much stub sticking up in front of the tie-in point. that extra stub was catching more thread wraps than it needed to, which was crowding the head and also pushing the flare sideways instead of letting it sit evenly around the shank.
the fix is just to trim the butt ends short, close to where the thread wraps are, at a slight angle so you don't get a hard blunt step under the head thread. cut it too far out and you'll be fighting a bulky, lopsided head for the rest of the fly. i knew this, technically, i'd read it — i just hadn't connected it to what i was actually seeing under the vise. bugged me for a week that i hadn't caught it sooner.
a word on the scissors
use sharp, fine-tipped scissors for this, not your all-purpose craft ones. elk hair is wiry and dull scissors will crush the ends instead of cutting clean, which makes the stub flare out even more. keep your fingers well clear of the hook point while you're trimming close in — it's an easy moment to nick yourself because you're focused on the hair, not the hook.
the opinion part
i'll say the thing i always say here: proportions matter more than the material. you can use the fanciest elk hide in the shop, but if your wing's too long, too short, or the flare's uneven because of a stub you didn't trim, the fly won't ride right on the water. get the mechanics right first. the hair's already doing most of the work for you, hollow and buoyant like it is — don't fight it with a sloppy cut.
before next time
practice stacking and flaring a few clumps of hair on a bare hook shank, no other materials, just to get the two-wrap flare feeling natural in your hands. next lesson we build the body and bring it all together.