I am planning to work through each of the crossed structure bindings now. Arregui details seven different ways to make a crossed structure binding and I have only tried two of these. The one that I use most is the Crossed Structure Binding Basic (CSB Basic). So I have done this a hundred times but I went to Arregui's website to see the instructions again and discovered that it isn't so basic. She actually shows how to do the CSB Basic with three different sewings. So I did all three. And surprisingly, the way I usually sew them wasn't included so I did that too, resulting in four different books just to cover this one binding!
One big difference between this CSB and the others, is that the front and back covers are cut at the same time. For all the other CSBs, the covers are cut separately. I started with this template and used it for all the books, in four different colours.
I have always used the 3 inside strips for sewing but discovered that Arregui also shows how to sew the book using the other 4 strips. This makes an obvious impact on the appearance of the finished book. So I sewed two of these books on 3 strips, and two on 4 strips. And all four books are actually sewn a bit differently, one of each using kettle stitches and one with some extra wrapping around the strips...Arregui says this can be good in thick books to keep a consistent swell. Not necessary for my books but I did one like it anyway.
Then I just had to attach the front covers and I have four very different books all made using the CSB Basic instructions.
I like the alternate sewing on four strips and it seems to make the spine a bit sturdier...CSB Protective comes next.