I looked at a lot of instructions and videos on the net and here is my take on how to make yarn from old t-shirts:
- The t-shirt must have no side seams, otherwise it's not going to work.
- Wash the t-shirt in hot water and dry on high to make sure it's shrunk as much as it is going to.
- Get out your ironing board. (no, not to iron the t-shirt.)
- Slide the t-shirt on the ironing board. This will make subsequent cutting much easier. (BTW, set up the ironing board opposite how you usually do it. If you are right-handed, point your ironing board to the right. If you are left-handed, point it to the left.)
- Cut off the bottom hem of the t-shirt.
- Cut along the bottom edge at an angle until you have about 1" in width. Then keep cutting in a spiral round and round, keeping the strip approximately 1" wide. This is where the ironing board makes it easier - just rotate the shirt around as you cut. And don't be OCD about getting it exactly 1" or exactly straight - just guesstimate. Or make it wider than 1" if you what. Your call.
You will eventually hit an obstacle - either the armpits or a print on the t-shirt. This is the end of your yarn-making adventure (at least with this t-shirt.) Let go. Cut it loose. Now, hold about a foot between your two hands and pull apart. The strip will naturally curl on the purl (or is it knit?) side. Whatever. It will curl on it's own if you pull it hard enough. Work your way down the strip pulling for the entire length.