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Stopper

EStar Stopper

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.

Failure modes

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

Stopper family

Bulk at the tail, larger than the opening — not a join.

  • !Body smaller than the block or fairlead after dress
  • !Asked to join two ropes
  • !Figure-8 used in HMPE where Estar extra turns were the stopper, or Ashley left as a two-lobe overhand
Fails when
  • !The buntline was not tightened first, so the knot stays soft and can pull through the opening
  • !The tail goes through only one loop, leaving a body that can be worked open
  • !The finished knot is small enough to fit through the opening it has to stop at
Geometry

  • Tied as a figure-8 and called Estar

    Walks through the block in Dyneema

    The extra tucks are why this stopper exists · step 02

  • Loose or undersized body

    Pulls through the opening

    Size after dress is the job · step 04

  • Asked to join two ropes

    A stopper is not a bend, and HMPE joins are splices

    Splice if you needed a join · step 04

If you saw this

  • Stopper walks through the block in Dyneema

    Check

    • ?Extra tucks present
    • ?Compact body larger than the opening

    Then

    • →Retie the Estar path
    • →Splice if you needed a join

  • Tied as a figure-8 and called Estar

    Check

    • ?Walks through the block in Dyneema
    • ?Inspect step 02

    Then

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

  • Loose or undersized body

    Check

    • ?Pulls through the opening
    • ?Inspect step 04

    Then

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

  • Asked to join two ropes

    Check

    • ?A stopper is not a bend, and HMPE joins are splices
    • ?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 stopper is a bulk knot. It bears on a hole, a device, or the hand (heaving line).
  • ·Figure-eight stopper and figure-eight loop share a body and split a job. That is a family identity, not a rating.

What topology does not predict

  • ·Bulk vs security on HMPE is material. EStar exists because figure-eight can walk on slick line — that is cited practice, not an invariant.
  • ·Heaving-line mass is a throwing job, not a topological one.
  • ·No strength retention is computed here.

Not for

  • ·Joining two ropes
  • ·A load-bearing eye
  • ·A join in HMPE (splice)
  • ·A throwing weight (heaving line knot)

Same pattern, different job

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

Sources