Twist" in spun yarns or ropes is often labeled S-twist or S-laid (for left-handed twist) and Z-twist or Z-laid (for right-handed twist), due to the respective left and right of the central sections of those two letters. To visually determine the handedness of the twist of a rope/yarn/etc, sight down a length of it; the direction of the twists as they progress away from you, left or right, reveals their handedness.
No comments:
Post a Comment