In the preparation stage, it is possible to create two types of fancy yarn: yarns with loose hairs and knop yarns.
In the first case, the effect is obtained by adding loose hairs to the blend, giving the yarn a fuzzy appearance and a silky hand. The presence of loose hairs generally necessitates three passages through the blending chambers, the second one involving an extended pause, long enough to allow the blend to "rest".
Loose hairs are generally fibres of animal origin (sheep, camel,
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