A left-handed feather is a natural feather whose natural curvature or structure (the position of the feathers relative to the quill, with the feathers and quill forming an “L”) is such that, when correctly mounted, it causes the arrow to rotate leftward in flight (counterclockwise when viewed from behind).
Importance in arrow construction:
- Natural feathers are available in right- or left-handed versions
- All feathers on an arrow must have the same twist direction
- The twist direction influences the arrow’s rotation in flight
Effect:
- Stabilizes the arrow through rotation
- Improves flight stability
- Especially relevant for helical (diagonally glued) fletching
Whether left- or right-handed, the twist direction is typically secondary – what matters is consistency.