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Arbor hitch

Arbor Knot

Friction on hardware · 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.

Arbor Knot — finished structureFinished structure. Line around the reel arbor; a sliding overhand to the spool and a stopper in the tag.
finished · schematic

Line around the reel arbor; a sliding overhand to the spool and a stopper in the tag.

Finished structure

Line around the reel arbor; a sliding overhand to the spool and a stopper in the tag.

HTH · Reference layout

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

Arbor 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.

Arbor / core-grip family

A grip on a spool arbor or a lead-core sheath — not a join of equals.

  • !Too few turns on a slick arbor
  • !Sheath cut while the core is pulled
  • !Overhand missing on the leader so the trap never sets
Fails when
  • !No stopper overhand tied in the tag end
  • !Stopper left loose, so it pulls through the first overhand
  • !Knot not pulled down onto the arbor, leaving the loop loose on the spool
  • !Braid on a smooth bare arbor, where the whole loop turns around the spool
Geometry

  • Cinch never took the spool arbor

    Spool spin / dumped backing

    An arbor knot that does not cinch to the spool is not finished · step 03

  • Missing lock overhand on the tag

    May slip around the arbor

    The tag overhand is what stops the cinch walking · step 02

  • Overhands not around the arbor

    Unreliable — you tied something else on the spool

    Both overhands must capture the arbor path · step 01

  • Left loose on the arbor

    Slip on the first run

    Cinch to the spool, then lock; a floating arbor knot dumps · step 03

If you saw this

  • Whole spool of line spins on the arbor

    Check

    • ?Pull the line hard and watch for arbor rotation

    Then

    • →Strip the spool, add tape or a mono underlay, respool under tension

  • Finished check failed — Missing tag stopper overhand

    Check

    • ?Overhand on standing line seats against the spool arbor
    • ?Tag overhand stops slip under spool tension
    • ?Line cinches to the arbor without spinning free

    Then

    • →Retie. A bad arbor knot slips and dumps the spool under the first run.

  • Cinch never took the spool arbor

    Check

    • ?Spool spin / dumped backing
    • ?Inspect step 03

    Then

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

  • Missing lock overhand on the tag

    Check

    • ?May slip around the arbor
    • ?Inspect step 02

    Then

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

  • Overhands not around the arbor

    Check

    • ?Unreliable — you tied something else on the spool
    • ?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

What holds it

  • ·An arbor knot is a hitch plus a stopper against the spool. The spool is the object.
  • ·It does not join backing to fly line. That is a different job.

What topology does not predict

  • ·Spool material and line slickness change grip. Topology is silent.
  • ·No backing-capacity number is implied.
  • ·Decide already knows line-to-spool. This page does not change what it recommends.

Not for

  • ·Backing-to-fly-line or any leader join
  • ·A load-bearing eye
  • ·Any load-bearing terminal or line-to-line job
  • ·Backing-to-fly-line — this only grips a spool arbor

Same pattern, different job

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

Sources