Yarn, plainly explained

A wall of string, and most of what you actually need to know about it.

The wall

There's a wall in every yarn shop. Hundreds of colours stacked in little wooden cubbies, and somehow it feels like a test you haven't studied for. Everyone beside you seems to know exactly what they're reaching for. They pick things up casually, turn them over, put them back. You're still standing three feet away, trying to work out where to begin.

It isn't a test. It's a wall of string. Some of it is soft. Some of it is scratchy. That's most of what you actually need to know. The rest is vocabulary, and vocabulary comes later, or not at all.

Too many words

The labels don't help. Worsted. DK. Aran. Fingering. Superwash. Four-ply, eight-ply. Numbers in brackets. A little symbol shaped like a skein with a number sitting inside it. Some labels have six languages on them and none of them seem to be speaking to you.

So you stand there reading, comparing, doing sums, trying to work out the right answer before you feel allowed to touch anything. Which is a strange way to begin something you took up in order to be calmer. You came in for something to do with your hands. Now you're doing mental arithmetic in a shop that smells of sheep.

And nearly all of it is just two things said in a complicated way: this is how thick the string is, and this is what the string is made of. That's the whole secret. Two questions. Not twenty.

Fibre and thickness

Yarn starts as fibre. Something short and messy — sheep's fleece, cotton bolls, bamboo pulp, plastic pellets. Someone spins it, twists it, until it holds together as one long strand. Then they wind it into a ball so it doesn't tangle. That's it. That's yarn. Everything on the wall is a variation on that one act of twisting.

Wool is warm and forgiving. It stretches, so uneven stitches settle down and end up looking better than they were. Your mistakes literally disappear into the fabric over time. Cotton doesn't forgive anything — it shows every wobble, and it stays cool in your hands. Some people love that honesty. Acrylic is cheap and hardy and completely fine. Genuinely fine. There is no moral hierarchy in a ball of string.

Thickness is the other half, and it's the simpler one. Thin yarn on thin needles makes small, dense fabric, and it takes a long time. You might knit for an entire evening and barely see any progress. Thick yarn on thick needles grows fast under your hands — you can watch a scarf appear in a single sitting. Neither one is better. One is just quicker to see. If you're new, the quick one is kind. It tells you sooner whether you're getting it.

Thickness, and what it's made of. Everything else on that label is detail you can pick up later. Or never. Plenty of people knit for decades without ever learning what DK stands for. It doesn't hold them back.

Choose with your hands

So here's how to choose. Take the ball off the shelf. Squeeze it. Press it against the inside of your wrist, where your skin is honest about scratchy. The skin there is thinner, more direct. Your hands will know before your head does. If it feels nice, it is nice. If it doesn't, put it back. You don't need a reason.

Then turn it over. Somewhere on the band there'll be a needle size, usually printed near a small drawing of two crossed needles. It's a suggestion, not a rule. Buy the needles it suggests. Go home. That is genuinely the whole conversation. You can spend the rest of your life refining it, but you don't have to spend one more minute on it today.

One warning worth knowing. If the label says hand wash, it means hand wash. Hot water and a machine will turn your work into a small stiff felted thing. Sometimes that's funny. Usually it's a shame, especially after you've spent twenty hours making it. Cool water, a bit of soap, squeeze it gently, lay it flat. That's all it asks.

Just string

You'll end up with leftovers. Half-balls in a bag under the bed, in colours you no longer remember choosing, too small for anything and too good to throw away. A ball someone started and gave up on. A ball from a charity shop with no label at all. They accumulate the way breadcrumbs accumulate on a counter — not on purpose, but steadily.

That's normal. Wool from a charity shop is still wool. Yarn a friend gave up on is still yarn. It doesn't know what it cost, or who bought it, or what it was supposed to become. It's just twisted fibre, sitting there, waiting for hands.

You're not building a collection, or an investment. You're not stocking a stash for some future project you haven't planned yet. You're buying string so your hands have something to do this evening. Choose the one that feels nice. That's allowed to be the whole reason. It usually is.