Thanks for this last post. I was banging my head trying to figure out why the +2 was in the cutting dimension calculations. I think it is redundant myself but I can see your logic. I think it would be best if it were not hard coded though so people could alter the seam allowance/channel as needed. In my case I don't want side channels so the blanket +2" is a bit excessive when I use the seam allowance input but on the top/bottom I would still like to give a bit extra for channels. I also think that adding inputs for each would be excessive. Either way, I love this sheet!
Ha, even sitting here thinking about it I am confusing myself. I will be better with fabric in my hands.
Edit:I am glad I cut everything without changing my allowance. I realized the +2" was only vertical.