The Whirlwind Quilt Block goes by a bunch of other names - Modern Envelope, Twin Sisters, Water Wheel, etc, etc. The traditional Whirlwind quilt block uses only 2 colors but this variation uses 4 fabrics. I'll show you 2 different ways to sew this block together and talk about another way that I've seen online.
It's a Snap - Downloadable 3 Yard Quilt Pattern With this economically-priced pattern, you simply take 3, one-yard cuts of fabric plus a few hours and make a beautiful quilt top with binding and borders. The pattern includes an assembly diagram and step-by-step directions that make your cutting and piecing a snap! Finished size of quilt: 44 x 62 inches (111.76 x 157.48 cm)