I need to make a couple of those too. You did great! I will make mine without all that math stuff. LOL. I'll hold the fabric up to the machine, measure how much I need to go over it, and how wide it needs to be. A few pins and some cutting. A nice bowl or lid for the curve... nothin' to it. The only kind of pi I want to know about has an "e" on the end and comes in a dish!
