This is the coolest tool!
Use it to make clamshells, quarter-, half-, and full-circles, along with orange peels. Then arrange them into so many beautiful designs. Below are just a few possibilities!
Learn more about it in Show 2502 with Latifah Saafir.
This is the "new and improved" Clammy 10" which now includes registration marks right on the template for easy transfer to your shapes.