Worsted weight yarn is medium weight: Category 4 on the standard yarn weight system. Concretely, it knits at roughly 16 to 20 stitches per 4 inches (10 cm) in stockinette on 4.5 mm to 5.5 mm needles,...

A production manager approves a 48Nm/2 lambswool yarn after lab tests, then faces a return claim three weeks later because the finished sweater pills across the chest. The lab results were not wrong;...

Pull two balls of yarn off a shop shelf and both bands may read "wool." Knit them into the same 10 cm square and you get two different fabrics. One closes up small gaps with a soft, slightly hazy sur...

Pick up a skein labelled "wool" and you have only the beginning of the story. Merino, Shetland, Bluefaced Leicester, woolen-spun, worsted-spun, superwash, and blended with silk: all of them are wool,...

You pick up a soft skein, see "wool yarn" on the wrapper, and then wonder whether every ball of yarn contains wool. The question "is yarn wool" has a clear answer: no. Yarn is the continuous strand o...

A pattern says worsted weight. Your stash has a DK label. The two balls look close enough, so you wonder whether you can use them the same way. The short answer is no: DK and worsted are not the same...

If you have ever compared a bag of soft merino yarn with a spool of cotton thread, you already know that they feel different, behave differently, and are made from different raw materials. The questi...

Ask a product developer what wool they need for a new sweater line, and you will often hear the same question: how many types of wool are there? The answer is never straightforward. Some lists count ...

A design brief that calls for "heavy worsted wool yarn, 100 percent wool" seems clear until three supplier samples arrive: one wraps nine times per inch, another wraps eleven, and a third behaves mor...

Choosing between bulky and super bulky yarn comes down to one measurable number: stitches per 4 inches (10 cm). Bulky yarn, the Craft Yarn Council's category 5, knits to roughly 12-15 stitches over 4...

The Label Is the Yarn's Spec Sheet Two yarns can look the same on a shelf and still behave completely differently on the needle. The paper band wrapped around the skein is what separates them. A yarn...

What Mercerization Actually Does to Cotton Fiber Mercerized cotton is cotton that has gone through a caustic soda bath, a treatment that permanently changes the shape and behavior of the fiber. Untre...