Sadly, no. Crimp is not related to fiber diameter. What we know about fiber has changed over time as our fiber science has improved. People used to think crimp was directly tied to fiber diameter (microns). However, going back to the 1920s and 30s, people knew that the crimp wasn't necessarily a predictor for… Continue reading Does Crimp Indicate Fineness?
Center pull ball plying makes one ply consistently different from the other ply. The effect is small, but it is more noticeable on low twist yarns. Center pull plying consistently makes one ply ever slightly looser and one ply slightly tighter.