Alpine Butterfly
Interlock · Climbing
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.
When this family fails, it fails as these. The recovered end still outranks the name.
A mid-line eye that can take load in three directions.
- !Twists not nested — the eye distorts under side load
- !Tied as an overhand on a bight, which will not take three-way load
- !Eye sized after it was already loaded
- !The lifted turn was laid over the other turns but not tucked under them, so it slides straight out as the knot comes off the hand.
- !The turns separated while sliding off the hand and the tuck came out of place, leaving loose coils instead of a knot.
- !It was set on only the loop or only the standing parts, so it sits twisted and can change shape under its first real load.
Wrong wrap order
Body inverts into a slip loop
Fingertip turn must wrap around the other two before it leaves the hand · step 02
Twisted body never loaded on all three parts
One standing part slips through under load
Dress by pulling the loop and both standings · step 04
Used as an end-loop
Wrong job — a bowline or figure-8 would untie easier
This is a mid-line loop, not an end-eye · step 01
Loop distorts or one standing part slips through
Check
- ?Square body
- ?Loop standing perpendicular
- ?Both standings leaving opposite sides
Then
- →Untie and retie the hand wraps
- →Load all three parts to dress
Wrong wrap order
Check
- ?Body inverts into a slip loop
- ?Inspect step 02
Then
- →Retie. Do not dress a defective structure and call it seated.
Twisted body never loaded on all three parts
Check
- ?One standing part slips through under load
- ?Inspect step 04
Then
- →Retie. Do not dress a defective structure and call it seated.
Used as an end-loop
Check
- ?Wrong job — a bowline or figure-8 would untie easier
- ?Inspect step 01
Then
- →Retie. Do not dress a defective structure and call it seated.
What holds it
- ·A mid-line loop is tied on a bight. Both standing parts stay load-bearing.
- ·Alpine butterfly and bowline-on-a-bight are different geometries for the same job class. Invariants do not rank them.
What topology does not predict
- ·Direction of pull (one standing part vs both) is mechanics, not knot type in the Jones sense.
- ·No working-load table is attached here.
- ·Capsizing under ring load is a physical defect, already a Diagnose story.
Not for
- ·An end-of-line terminal eye
- ·Using this page to override a Decide elimination
- ·An end-loop (use bowline / figure-8)
- ·A loop you will tie and untie every five minutes in stiff hawser
Same pattern, different job
No sourced twin among these knots. Related knots stay on the Library card.
- Knot — practical vs mathematical (Wikipedia) — Closed-curve knot theory ignores friction. Practical knots are classified by function.
- Patil et al. — Topological mechanics of knots and tangles (Science, 2020) — Lab rods: simple topological counts correlate with stability. Not a field rating table.
- Animated Knots — Alpine Butterfly Loop
- The Bear Essentials — This Knot is a GAMECHANGER! - The Alpine Butterfly Knot. — Cited tying video already attached to this record.