yarn. Monday , May 28th , 2018 - 14:45:10 PM
Another measurement of yarn weight often used by weavers is wraps per inch (WPI). The yarn is wrapped snugly around a ruler and the number of wraps that fit in an inch are counted.
Protein yarns (i.e. hair silk feathers) may also be irritating to some people causing contact dermatitis hives wheezing or other reactions. Plant fibers tend to be better tolerated by people with sensitivities to the protein yarns and allergists may suggest using them or synthetics instead to prevent symptoms. Some people find that they can tolerate organically grown and processed versions of protein fibers possibly because organic processing standards preclude the use of chemicals that may irritate the skin.
The most commonly spun animal fiber is wool harvested from sheep. For hand knitting and hobby knitting thick wool and acrylic yarns are frequently used.
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