Sarah Swett and I made a class about a particular warping technique six years ago now. Monday we did a live chat on YouTube to talk about our experience with Fringeless, answer your questions, and talk about the tapestry life.
I have to say that hanging out with Sarah and making goofy videos (along with lots of serious ones) was a lot of fun then and clearly it is still fun now. I think the photo below clearly indicates the difference in our knitting abilities and probably also our weaving abilities. All tapestries in those photos are by Sarah and she wore gorgeous hand-knitted sweaters which she designed on every day we shot the class. I was apparently wearing a cheap cotton sweater from Eddie Bauer which is still in my closet.
We answered a lot of questions about four-selvedge warping including why you might want to do it and how we both use the practice. And if you want to see the misspelling of crotchety, I recommend watching the whole video as Sarah shows us her current work in progress. I hope you enjoy the video!