Double Constrictor
( ABOK #1252 )
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Usage
The Double Constrictor is a more secure version of the Constrictor Knot and can be difficult or impossible to untie once tightened. The Double Constrictor is appropriate for situations where secure temporary or semi-permanent binding is needed. For example, it can be used as a temporary whipping to keep the end of a rope from unraveling or securing a bundle of sticks or poles.
Common Uses
- clamp a rubber tube onto a barbed fitting for a tight seal.
- bind slippery or waxed cord tightly around an object.
- close the neck of a bag or sack with maximum security.
- bundle cables or cords together permanently.
- temporarily keep a rope from unraveling until a proper whipping or end splice can be applied.
- bind tightly around a cylindrical object like a pipe or pole.
- tie a bundle of firewood, yard waste, or sticks.
- cinch a bundle of pipes or lumber tightly together.
ABOK
- 1252
Structure
The Constrictor Knot is made similarly to a Clove Hitch but with one end passed under the other, forming an overhand knot under a riding turn. The Double Constrictor is an even more robust variation that features two riding turns.
Strength/Reliability
The Constrictor and Double Constrictor are both extremely secure when tied tightly around convex objects with cord scaled for the task at hand.
