Saturday, December 19, 2015

Yarn Selection: Two-Ply Yarns

Tips for Selecting Yarn for Knitting Projects from Round Table Yarns: Two-Ply Yarns

Along with fiber content, you should also consider how the yarn has been created. By that, I mean how many plies it has and how tightly it has been twisted. If you are a spinner, you probably know at least a little about twist and plying, but I know that it's not something I really considered a lot before I started spinning and even then I didn't fully move some of those ideas over into my choice of non-handspun yarns for a while.

To give a very brief overview, yarn is fiber that's been given twist. Some yarn has more twist and some yarn has just enough twist to keep the fiber from drifting apart while you use it. And how much twist your yarn has can have a pretty big impact on your project (which you'll quickly find out if you do something like knit a sweater from Malabrigo Worsted Merino, which is a loosely spun singles yarn that pills and felts as soon as you look at it. Not something you really want to happen to your sweater that you've put a ton of hours into.)

Sometimes yarn is made with just a single ply--meaning one "strand" that has been twisted. Yarn can be made with two and three strands twisted together (2-ply and 3-ply) or even a really large number of plies in various arrangements. And the number of plies and the way it has been plied also greatly affects the outcome of your project.

Side note: Talking about plies can be a bit confusing because in some parts of the world, yarn weight--aka worsted vs. fingering--is talked about in terms of plies. In those cases, it doesn't actually mean the number of strands that have been twisted together, so be careful about what a yarn label description really means when it says it is a 2-ply or 3-ply, etc. (fingering weight is also listed as "4-ply" for example). The best way to determine number of plies (number of strands twisted together) is to take your yarn and untwist it until you can see the individual strands that make up the yarn (you'll have to hold the yarn as you count because as soon as you let go, most yarn will spring back into shape).

So where is all this going? Some yarn constructions are better suited to particular stitch patterns than others. If you want texture and cables to really pop, get a nice rounded yarn, a 3- or 4-ply (or more). But if you want your lace stitch patterns to really stand out, rather than going for a rounded yarn, look for something with just 2 plies. Why? When you take two strands of yarn and twist them together (to create a 2-ply yarn) the strands are usually twisted together in the opposite direction each single strand was spun. And as these 2 strands of yarn rotate around one another, they create a flatter overall surface rather than the more rounded balance of adding in an additional ply. These 2 strands are also pushing up against each other. All of this works together in a knitted item to create a fabric that wants to remain more open and airy. And what is more open and airy than lace stitches? (Interestingly, I recently learned that 2-ply yarn also makes garter stitch look really nice.)

All of the above is the reason why when I was choosing yarn bases for Round Table Yarns, I knew that I wanted a fingering weight base that had just 2 plies with not too tight of a twist so it would be just right for doing lace patterns, especially shawls. (The resulting yarn is Guenevere.)

So when you're considering whether or not a yarn might be right for the lace shawl you're planning to knit, do a little investigation and untwist it to count the plies.

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