If I remember correctly, your blocks are exactly the size they are supposed to be.
You are correct, it is way too puckered. As one who strongly recommended you do what you did :? I guess I should have asked how short the sashing strips were. I don't like myself very well because I never/rarely think to ask questions .... facts???? What are those???
I am sorry you went to all that work and now have to do it over, which is exactly what I would do ...
Do you suppose the pattern was wrong when it told you how long to cut your sashing strips?
I mean ... if your block is twelve and a half inches square, then the sashing should fit if it is cut at twelve and a half inches long ... right???
A little puckering would be: if the measurement is within a quarter inch difference, according to Eleanor Burns ...
I am sorry that the technique didn't work for you. :cry: