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Where the theory applies
Bend — two lines

Hunter's Bend

Wrap stack · Constriction

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.

Failure modes

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

Interlocking-bend family

Two interlocking overhands or a Carrick lattice — tails on the documented sides.

  • !Tails on the wrong sides of the bend
  • !Broken lattice or a reef-knot form in disguise
  • !Undressed so one overhand takes the whole load
Fails when
  • !Both ends pass through the centre from the same side, so the two overhand knots do not lock into each other
  • !The bights are laid over each other instead of linked, so the ropes come apart before the knot is built
  • !The ends are left short on a join that takes a critical load
  • !It has taken a heavy load and must be untied, as it can jam tight enough to need cutting
Geometry
  • Same-side tails

    Bend will not lock and spills

    Each tail must exit opposite after its own-loop tuck · step 03

  • Started as a 6-and-9

    You tied a Zeppelin — keep it on purpose or retie Hunter's

    Hunter's overlaps tails; it does not start as a 6-and-9 · step 01

  • Expected to untie after a heavy snatch

    Jammed double-overhand, knife job

    If you must untie after load, use a Zeppelin · step 04

If you saw this
  • Bend spills, or will not break after load

    Check

    • ?Opposite working ends
    • ?Compact body, not a 6-and-9

    Then

    • Retie opposite tails
    • Use Zeppelin if you must untie after load
  • Same-side tails

    Check

    • ?Bend will not lock and spills
    • ?Inspect step 03

    Then

    • Retie. Do not dress a defective structure and call it seated.
  • Started as a 6-and-9

    Check

    • ?You tied a Zeppelin — keep it on purpose or retie Hunter's
    • ?Inspect step 01

    Then

    • Retie. Do not dress a defective structure and call it seated.
  • Expected to untie after a heavy snatch

    Check

    • ?Jammed double-overhand, knife job
    • ?Inspect step 04

    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 bend captures two working ends. Holding is constriction and the seated wrap or barrel — not a closed-knot invariant.
  • ·Unequal diameters and slick pairs (braid to fluoro) are material problems. Crossing number does not rank FG against a Double Uni.

What topology does not predict

  • ·A Jones polynomial does not pick a braid-to-leader family.
  • ·Published retention bands stay as cited on the knot record. This page does not invent one.
  • ·Guide-click and tag-trim are field geometry, not topology.

Not for

  • ·Attaching a single line to a spar or cleat — that is a hitch
  • ·Reading this page as a recommendation from Decide
  • ·A join you must untie after a heavy snatch (Zeppelin)
  • ·Extreme diameter mismatch

Same pattern, different job

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

Sources