Marsha from Country Schoolhouse in Superior, Wisc is located at the tip of Lake Superior in Northern Wisconsin. This is where she created a MUST HAVE ruler to use with Moda Layer Cakes TM and Charm Packs.  The ruler is called the Twister. I have tested the ruler using Park Avenue by 3 sisters in stores May/June 2010.
These are the easy steps to why this is the MUST HAVE ruler.
Step 1

Arrange your layer cakes in a pleasing order. Sew them together. Add a border. For future reference I am going to call this piece a quilt top. You will cut this apart and sew it back together.
Step 2

This is where it gets fun! Lay the ruler on your quilt top lining up the lines as shown on the ruler instructions. Continue cutting across the quilt top.

This is the left overs after I cut the squares. There is a tiny amount left when you cut each of the squares so be careful as you cut.

Step 3
“Twist” the blocks one turn and sew them together into rows. The only word of  caution is that the blocks are on the bias so be careful sewing them together. The border from your quilt top automatically makes a border around the pinwheels when sewn into rows. Pretty Cool!

Sorry about the brown carpet and the brown fabric but I think you can get the jist from the picture.

Keep the squares in order and sew the rows together.
Step 4

Add additional borders as needed.
Ask for this ruler at your favorite quilt store. It is available in 2 sizes.
Order Lil’ Twister to use with charm packs.Stock # LTW5
Twister ruler works with Moda Layer Cakes.  Stock# TW10
Quilt and bind as desired.
Enjoy!