Thank you so much, Barb! I'm going to try that one today. Would it be to much to ask of you to calculate one for a 10" finished block also? That way I could add a small border around it & trim it off to be a 12 1/2" unfinished block? I do a lot of my 12 1/2" blocks that way since it's hard for me to get good, accurate 12 1/2" blocks the right size. It must be my seams or something but this time I want to make PP'd blocks. One of these days I hope to get PPing down without so much concentration. It's a real brain drag on me but I'm still trying. Thanks again!