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Double-line

Spider Hitch

Doubled line · Jam

DiagramsHow to tie it

Does not pick a knot

This page does not pick a knot for you. DNA, molecules, quantum braids and vortices stay off Decide.

Finished structure

No drawing of this exact knot yet. The written steps are the reference.

HTH · Reference layout

Spider Hitch — finished-state checks, on the shared reference layout

Spider Hitch — 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.

HTH · Advanced failure modes

Spider Hitch — what fails and what to do

Spider Hitch — what fails and what to do
Hook the Horizon reference plate
Double-line family

A load-bearing loop of doubled line, locked so it cannot crawl back.

  • !Twists or wraps not packed before the lock
  • !Lock that crawls back into the double
  • !Uneven legs — one side takes the shock
Fails when
  • !Double taken around the small loop instead of through it, so the hitch falls apart
  • !Wraps crossed on the thumb or pulled off together, so they tangle
  • !Wraps not closed tight on all four strands, so the double slides open under a hard pull
  • !Braid tied with only the 5 wraps given for mono
Geometry

  • Hitch column unravels — double is gone

    The doubled section fails

    Wrap friction under tension holds the Spider; a collapse is a retie · step 03

  • Under-wrapped or messy hitch column

    Weak double you cannot trust on a fish

    Even wrap count is the Spider; too few wraps is a different hitch · step 02

  • Bight never completed the hitch pass-through

    Unreliable lock

    The loop must complete the hitch before you load the double · step 03

If you saw this

  • Double unravels or shortens under load

    Check

    • ?Wrap count
    • ?Hitch column density

    Then

    • →Retie with more wraps
    • →Build a Bimini when time allows

  • Twist column shows gaps or stacked reverse wraps.

    Check

    • ?Look for: Twist column shows gaps or stacked reverse wraps.

    Then

    • →Retie with continuous even twists.

  • One loop leg carries more load than the other.

    Check

    • ?Look for: One loop leg carries more load than the other.

    Then

    • →Equalize legs, then finish locks.

  • Locking wraps are too few for the line.

    Check

    • ?Look for: Locking wraps are too few for the line.

    Then

    • →Add the practical wrap count for the material.

  • Loop legs fray at the twist shoulder.

    Check

    • ?Look for: Loop legs fray at the twist shoulder.

    Then

    • →Retie; inspect for nicks before reuse.

  • Finished check failed — short wrap bundle in slick braid

    Check

    • ?loop legs emerge evenly
    • ?wrap bundle is compact
    • ?braid uses the higher practical wrap count required by the material

    Then

    • →Retie. rapid slip or reduced durability.

  • Hitch column unravels — double is gone

    Check

    • ?The doubled section fails
    • ?Inspect step 03

    Then

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

  • Under-wrapped or messy hitch column

    Check

    • ?Weak double you cannot trust on a fish
    • ?Inspect step 02

    Then

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

  • Bight never completed the hitch pass-through

    Check

    • ?Unreliable lock
    • ?Inspect step 03

    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

What holds it

  • ·A double-line is a made pair: twist, hitch or plait, then an end lock. The lock is the knot; the pair is the product.
  • ·If the lock opens, you no longer have a double. That is a Diagnose story (double-line unravelled), not a change of mathematical type.

What topology does not predict

  • ·Bimini wrap count is a cited procedure, not a Jones degree.
  • ·Shock-load behaviour of the pair is material and construction. Unknown stays unknown here.
  • ·No IGFA or tournament rule is inferred.

Not for

  • ·A single-line terminal to a hook eye
  • ·Calling an unlocked plait a finished double
  • ·Maximum big-game double-line strength (Bimini still preferred when you can build it)
  • ·Situations where the hitch can work loose under cyclic load without inspection

Same pattern, different job

No sourced twin among these knots. Related knots stay on the Library card.

Sources