Superior Threads: About Thread Twist (How thread is twisted)

Bob Purcell (Chief Threadologist of Superior Threads) discusses S and Z twist and micro strands that make up the final product. Having a higher twist-per-meter on a thread results in having a smoother, stronger, less lint thread.

An incorrect twist direction causes twist displacement in the sewing thread which leads to excessive thread wear and sewing problems. Twist displacement, and the accompanying unwinding of the thread, is caused when the thread is pulled through the needle eye in an unfavourable feeding direction (friction on the edge of the needle eye). In normal operation this can be observed during reverse feeding.

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Comment by Connie on August 30, 2011 at 10:54am
Great presentation. Bob presented this information in such a way that it makes sense now.  Thank you for the great demo.
Comment by Andrea Schlickbernd on August 25, 2011 at 10:36am
Awwww..............now I get it!! I'm such a visual learner!! Now that makes sense. Thank you!!

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