Check out Roolen's "Disapearign Pinwheel" tute at her blog
http://www.roolen.blogspot.com/ You can get translation into English. Go into MC/Tutorial and scrool down until you get to "Disapearing Pinwheels" Such a great idea.!!!!
But What do you think the math would be to get certain size block. Any ideas? Maybe you should make block and then that is the size you have.
EG- If I want a 12" finished block I will need to make pinwheel block 13 1/2" unfinished to have block cut into 4 1/2" patches. But what size do you make the beginning pinwheel blocks. and is there a rule of thumb for use on any size block. HELp!!!!!