Know more about felting wool yarn

 Sometimes a gorgeous color combination and a yarn that feels wonderful against our cheeks are all that is required to persuade us, knitters, to part with our cash for a ball of yarn. However, there are situations when you want a yarn with certain characteristics: you are allergic to wool, you want to construct a felted product, or you need something washable. How do you tell if the yarn you're holding is the RIGHT yarn for your felting yarn project?

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. 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 felting wool yarn than you probably want it to be.

Why does yarn-from-an-animal feel?

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