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Double Davy Knot

Davy with extra security pass for larger flies.

Beginner · Monofilament / Fluorocarbon

Connection card

Double Davy Knot

For line → hook.

Double Davy Knot — finishedFinished structure. Two compact hitches at the eye — a doubled Davy for heavier tippet.

Two compact hitches at the eye — a doubled Davy for heavier tippet.

What it joins Line → hook. In monofilament, fluorocarbon.
Shape Overhand ahead of the eye, with the tag passed through the same loop a second time
Tag end Tag exits clean and short
Seated Seated against the eye. Stopping after one pass leaves a plain Davy
Start again if Stopped after one pass. That is a Davy — the usual pull-out on a larger fly

This card does not say how strong the knot is. A retention figure comes from a bench, in one material, at one diameter, tied by somebody who ties it all day — and the line in your hand is none of those. What it does tell you is whether the thing you have just tied is the thing the record describes.

What this plate is telling you

Davy with extra security pass for larger flies.

Save this as a picture and it works with a dead signal and a nearly dead battery, which is when a joint is most often tied badly. The rest of this page — the steps, the seating sequence, the failure modes and the bench — is for the evening before.

Why this knot

What it earns its place with, what it costs, and what to reach for instead.

Best for
Fly hooksQuick to tie
Not ideal for
  • Absolute smallest midges where a single Davy is enough
  • Heavy saltwater terminals and braid
Common mistakes
  • Pulling the overhand snug before both tucks are in
  • Tucking on the far side of the overhand instead of between it and the eye
  • Stopping after one tuck, which leaves a single Davy
  • Pulling the standing line first, or trimming before the knot is set
Alternatives
  • Davy KnotBeginner

    Tying a small fly to tippet with a quick, compact knot

  • Orvis KnotBeginner

    Ties tippet to a hook or fly with a small knot built on a figure eight

  • Pitzen KnotIntermediate

    Tying a hook, lure or fly to line or tippet

Before you start

  • ·NetKnots suggests the Double Davy for flies about size 16 and larger, with heavier tippet and larger hook eyes. The single Davy suits flies about size 22 to 18.
  • ·On a heavy-wire hook with very light tippet, about 4X to 6X, NetKnots suggests the Orvis knot instead.
  • ·Push 8 to 10 cm (3 to 4 in) of tippet through the eye, enough for the overhand and both tucks.
  • ·Keep the overhand loose until both tucks are through. A closed loop leaves no room for the second one.
Line + hardware: Tippet, Fly

Step 1 of 4 · move 1 of 2. Push 8 to 10 cm of tippet through the hook eye and let the fly hang

Space plays or pauses. Keys 1, 2, 3 and 4 set the speed. Arrow keys change the move.

How to tie it — Step 1 of 4 · move 1 of 2
Push 8 to 10 cm of tippet through the hook eye and let the fly hangThe tippet passes once through the hook eye with a long tag beyond it and the fly hanging on the standing line.

swipe to step

01.1

Push 8 to 10 cm of tippet through the hook eye and let the fly hang

Hold:
Left hand holds the fly by the eye
Move:
Right hand feeds the tag through and draws several inches clear
Written step 01

Push 8 to 10 cm (3 to 4 in) of tippet through the hook eye. Take the tag around the standing line and back through its loop to make a loose overhand just ahead of the eye.

You should now see

A loose overhand in the tippet above the eye, an open loop between the overhand and the eye, and plenty of tag still free.

If it goes wrong

Pulling the overhand snug. A closed loop has no room for two tucks, and the second one is the first to get skipped.

Fix: Work the overhand open with a fingertip until the loop is clear. If the tag has grown short, pull more through and start again.

Why: Two tucks go through this loop, so it has to stay open until both are in.

What fails if this is wrong
  • First pass cinched so the second cannot enter — You cannot add the security pass after a hard first seat. Leave the first hitch open enough to take the second pass.
What this is based onChanged, not yet re-reviewed · 4 known limits
Record
Reviewed 2026-08-13. 3 sources are cited for this record.
Drawing
Changed to fix faults found in its pictures or its film, and checked by the drawing checks. No person has looked at the change. Not yet re-reviewed, and not yet tied from the drawing. Recorded 2026-09-26.
Known limits
No audit has looked at this drawing since it was changed, so it may have faults that are not listed here.
Strength
Not established. No credible, comparable strength data exists for this knot, so no figure is shown.

What the drawing does not show

  • Step 2, move 1 of 1: Partway through the film the tag's end cuts straight across the top of the knot, trailing a straight bar, before the tuck takes shape.
  • Step 3, move 1 of 1: Partway through the film the tag is drawn as a zigzag laid over its own first leg, which drops out of the picture, before the pass settles round the standing line.
  • Step 4, move 1 of 1: Partway through the film most of the knot drops out of the picture and the standing line breaks, before the knot reappears closed against the eye.
  • Step 4, move 1 of 1: The trimmed tag is drawn coming out between the knot and the eye, over its own leg; it is not drawn lying under the knot against the eye.

Watch the tie

Double Davy Knot | How to Tie the Double Davy KnotAnimatedKnots · Opens on YouTube

External video from a creator we follow — not produced by us. Nothing on this page loads from YouTube until you follow the link.

Seating sequence — where failures are born

The step list compresses the finish. Run these phases in order, one at a time.

  1. 01 Moisten

    Wet the structure before any load reaches it.

    Zero. Nothing tightens yet.

  2. 02 Load

    Take up slack slowly until the wraps begin to gather.

    Light and even — both ends moving together.

  3. 03 Dress

    Watch the wraps stack in order; stop and back off if any cross.

    Hold, do not pull. Correction happens here or not at all.

  4. 04 Set

    One continuous pull to full seat — no sawing, no jerks.

    Firm, single direction, standing line against the terminal end.

  5. 05 Trim

    Cut the tag square, leaving a short stub proud of the knot.

    None. Never trim under load.

Finished structure — what correct looks like

Double Davy Knot, finishedDouble Davy Knot, finished

Drawn from a rope model of this knot: which strand passes over which comes from where the rope actually lies.

Structure
Overhand ahead of the eye, with the tag passed through the same loop a second time
Standing line
Standing line on-axis with load
Tag end
Tag exits clean and short
Wraps
No wrap stack. Two passes through the same loop
Seating
Seated against the eye. Stopping after one pass leaves a plain Davy

Verify before you load it

Every line is pass or fail. One fail means retie — do not load a knot you argued with.

  • 01Overhand ahead of the eye, with the tag passed through the same loop a second time
  • 02Seated against the eye. Stopping after one pass leaves a plain Davy
  • 03Tag exits clean and short
  • 04No wrap stack. Two passes through the same loop
  • 05None
  • 06Double Davy seated on the eye
Something failed → open Diagnose

Field notes — dark, cold, gloves

  • ·Retie by feel first, light second — the seat is a tactile event, not a visual one.
  • ·Gloves off for the dress phase. Fabric hides a crossing wrap.
  • ·Wrong twice in a row means the material or the hardware is fighting you. Change one, not your technique.
HTH · Reference layout

Double Davy Knot — finished-state checks, on the shared reference layout

Double Davy Knot — finished-state checks, on the shared reference layout
Hook the Horizon reference plate
Failure modes

When this family fails, it fails as these. The recovered end still outranks the name.

Fly / tippet family

Fine tippet at the eye, or fly-line to leader with a tube or nail.

  • !Hitch path around the eye instead of through it
  • !Single pass where two were the job
  • !Gap at the tube or nail on a fly-line join
Fails when
  • !Tag end pulled away from the eye, out from under the knot
  • !Very light tippet, about 4X to 6X, tied to a heavy-wire hook
  • !Only one tuck made on a larger fly or heavier tippet
  • !Standing line pulled before the tag, so the tag can slide out
Geometry
  • Stopped after one pass

    That is a Davy — the usual pull-out on a larger fly

    The second pass is why this knot exists · step 02

  • Second pass never seated to the eye

    Opens under load on anything bigger than a small dry

    Incomplete second pass is the Double Davy failure · step 03

  • First pass cinched so the second cannot enter

    You cannot add the security pass after a hard first seat

    Leave the first hitch open enough to take the second pass · step 01

If you saw this
  • Opens under load

    Check

    • ?Both passes visible and tight

    Then

    • →Retie carefully
  • Finished check failed — Only one pass completed

    Check

    • ?Second pass completes before the final draw
    • ?Compact seat at the eye
    • ?Tag controlled and short

    Then

    • →Retie. Incomplete double structure reverts to a weaker single Davy.
  • Stopped after one pass

    Check

    • ?That is a Davy — the usual pull-out on a larger fly
    • ?Inspect step 02

    Then

    • →Retie. Do not dress a defective structure and call it seated.
  • Second pass never seated to the eye

    Check

    • ?Opens under load on anything bigger than a small dry
    • ?Inspect step 03

    Then

    • →Retie. Do not dress a defective structure and call it seated.
  • First pass cinched so the second cannot enter

    Check

    • ?You cannot add the security pass after a hard first seat
    • ?Inspect step 01

    Then

    • →Retie. Do not dress a defective structure and call it seated.
Same family

Same failure class, different geometry. Open the plates — Diagnose still starts from the symptom.

This failed — start Diagnose
The bench · rep 1

Get it right with everything in your favour0/5 clean

Nothing logged on this knot yet, so it starts on the bottom rung.

Good light, dry hands, a table. Until the sequence is automatic here there is nothing for the harder rungs to test — you would only be learning that difficult conditions are difficult, which you already knew.

How · Tie it, check it against the list, log it. Five clean and the ladder opens.

Conditions for this rep
What went wrong, if anything

Nothing marked. Log it clean, or mark what happened first.

Strength, and where the number comes from

Not established

No published break test, and no source states how much the second pass is worth.

Percentages come from published tests on their own line, their own knot-tyer and their own pull rate. Yours is a different system. Treat a figure as a reason to test, not as a result you already have.

Sources for this record

Record reviewed 2026-08-13

Vetted references

Already tied it?

Check the finished knot against what correct looks like before you load it.