Sampler Quilt 2011 - Week 19 - Old Windmill

The Old Windmill block is made up of 16 half square triangle units using a background with another fabric.
The instructions will use the square method of making half square triangles by adding ⅞ inch seam allowance to the desire finished square size of 1½ inches. You may round up your cut square measurement to 2½ inches, then just square up units to 2 inches.

Fabrics and cutting instructions

Background: Cut 1 strip 2-3/8 inches wide. Subcut into 8 squares.

Accent: Cut 1 strip 2-3/8 inches wide. Subcut into 2 squares.

Fabric 3: Cut 1 strip 2-3/8 inches wide. Subcut into 2 squares.

Fabric 4: Cut 1 strip 2-3/8 inches wide. Subcut into 2 squares.

Fabric 5: Cut 1 strip 2-3/8 inches wide. Subcut into 2 squares.

Half Square Triangles from squares Match one square each of fabric pairs listed below, right sides together. Draw a diagonal line from corner to corner on wrong side of lighter fabric. Sew 1/4 inch seam on both side of diagonal line. Cut units apart on drawn diagonal line. Press seam to one side. Makes 2 units per square pair. Each block needs 4 half square triangle units per fabric pair listed below. Make 4 total for each pair. Fabrics 1 and 2 Fabrics 1 and 3 Fabrics 1 and 4 Fabrics 1 and 5

Old Windmill block final instructions Layout block pieces using 4 half square triangles of each fabric pair as shown in diagram. Sew first columns, then rows using a 1/4 inch seam. Press seams to one side. Visit my instruction and fabric calculator for the Old Windmill block to change the finished size and number of blocks for your own projects.