Sometimes all it takes to get us knitters to
plunk down a chunk o' change for a ball of yarn is a blend of pretty
colors and a yarn that feels good against our cheek. Sometimes,
however, you need a yarn with certain qualities: you're sensitive to
wool, you want to make a felted project, you want something washable.
How do you know if the yarn you are holding in your hand is the RIGHT
yarn for your project?
Rubber Duckie says, "C'mon in, the felting is fine!"
now. This is something I learned about from my spinning classes, folks.
So all you out there who were wondering why the heck I was going on and
on about spinning last week on Knitting Daily, well. There is a
method to my madness. Over the next few months, I'll have some posts
about choosing yarn, the RIGHT yarn, for your knitting—and I will share
some of the knowledge about yarn I learned whilst learning to spin.
In today's post, we'll talk about choosing yarn for a felting project—one
you knit first, then toss into the washer with the intention of
shrinking it and matting it up into a solid-ish, fuzzy-ish fabric.
How do you know which yarn will felt?
If you are making a felted project, the first thing you need to ask
is: did the fiber come from an animal? If it did, then it might felt.
(Notice: I said "might.") Next, look at the label and ask: Is it ALL
from an animal? Any non-animal fibers in your yarn will either cause it
to not felt at all, or cause the felting to be a bit less consistent
and "felt-y" than you probably want it to be.
Why does yarn-from-an-animal felt?
Sheep and other animal fibers are scaly—picture a fish's scales
covering each fiber. When you dunk wool into hot water and swish it
around, these scales open up, sort of like lots of little umbrellas
opening up all along the length of the fiber. When they open up, the
scales catch onto nearby scales and grab on. The more fibers you have,
and the more you rub the fibers around, the more scales there are to
catch onto each other. The fibers get all tangled up, and more scales
grab tight, until you have felt.
Do all animal fibers felt?
I would have to say "to varying degrees" and "eventually." A
disclaimer is in order: I am by no means a felting expert, and I
haven't read every single book on the subject. So if you know more than
I do, please chime in here!
So cute! The Felted Daypack
wools have smaller scales, some have larger scales. Some have
"smoother" scales, some coarser. All of those little details will
affect the degree to which the wool felts. Also: The way in which a
particular fiber is processed and dyed affects felting. Did you know
that a white yarn may felt differently than a colored yarn of the same
type and brand? This is because the dyes can smooth down, or raise up,
the little scales on the colored yarns. White yarns may be bleached,
which affects the yarn differently. Naturally colored yarns may not be
dyed or bleached at all.
Some yarns are specially treated with a substance that smooths down
the scales. These yarns are called "superwash" or "machine washable"
wools, meaning you can wash them in a washing machine and they won't
felt. However, over time, with wear and a lot of machine agitation, the
special fiber treatment may rub off, and your socks may start felting.
So: No scales, no felt. Sheep's wool is not the only fiber with
scales, so it is not the only animal fiber that felts. Alpaca will
felt. Llama will felt. Each animal's fiber is slightly different,
however, so (you're going to hate me for this....here it comes....) swatch carefully, including felting your swatch, before deciding whether the yarn you want to use is the RIGHT yarn.
Really? ALL animal fibers?
The ONE exception to the Animal Fibers Are Candidates For Felting
rule is silk. Silk comes from silkworms, and I would argue that worms
are not animals, they are worms, thus: bugs. Silk is not worm hair.
Silk is extruded from the worm; silk starts out as a liquid. (Ahem. Use
your brains, here, folks: "extruded" plus "liquid" equals...oh yes.
That's what silk is. Hardened Bug Extrusion. Very pretty and wonderful
hardened bug extrusion, it is, too.)
Bug extrusion hath no scales, therefore, silk won't felt.
Have you learned something about what will and what won't felt? Leave a comment and help the rest of us learn from your experiences.
Sandi Wiseheart is the editor of Knitting Daily.
What's on Sandi's needles? Laceweight alpaca/silk, and on another set of needles, lovely tan worsted wool-from-sheep, and on another set, silk/merino DK.