I love listening to this demonstrator but she didn't address how to keep that bias knot from getting into the seam allowance. She did put a finger into that to hold it out but didn't address the need for that. I'm learning!! It is certainly a quick block, much better than the traditional way. One tip I can pass along. I'm working with men's shirts. If you are working with stripes and want the knot to go the same way as the ends of the tie, turn that folded piece the opposite way and it will turn out well. (The 5" blocks would have the stripe north/south and the folded one goes east/west.)