Originally published June 14, 2013Often, when we are working with a customer to build a custom yarn to their specifications, we’ll use a method called “wraps per inch” to determine the weight of the yarn as we build it. This is more reliable than referring to “yards per pound,” because it will yield the same results, no matter what sort of fiber combination we’ve come up with. To help us out, we have this little cheat sheet on our side of the desk. What does this mean? Well, let’s say we have a yarn, and we want to find out the yarn weight. Let’s use this house blend, Mum, as an e...