A few weeks ago I was teaching the weft interlock to a student, when we both observed that it sometimes looked really good and other times it looked awful. I have always hated using this technique and now I know why! Because I was doing it wrong. I had always taught that it’s important to be consistent about which weft goes under and which one goes over, which is somewhat true, but it’s far more complicated than that. After consulting many books, and trying it out myself, I finally made…