Old Windmill quilt

Old Windmill quilt

The Old Windmill block is made up of 16 half square triangles and fits a four patch grid layout. In this calculator you may choose to sew half square triangles from squares or triangles cut from strips. To do the calculations, javascript must be enabled. While every effort is made to be sure of accuracy, I am unable to test every variation. Before you cut up large amounts of fabric, cut and sew a test block or two. If you find any errors, please email me at "jeanne@myquiltgenie.com".

Settings

Cutting Method

Finished size (before quilting): 43 by 43 inches

Size
Number of Columns
Number of Rows
Fabric Bolt Width

Fabrics

fabric 1Fabric 1: Cut 8 strip(s) 3-7/8 inches wide. Subcut into 72 squares.
fabric 2Fabric 2: Cut 2 strip(s) 3-7/8 inches wide. Subcut into 18 squares.
fabric 3Fabric 3: Cut 2 strip(s) 3-7/8 inches wide. Subcut into 18 squares. Cut 4 strip(s) 3-1/2 inch(es) wide for borders.
fabric 4Fabric 4: Cut 2 strip(s) 3-7/8 inches wide. Subcut into 18 squares.
fabric 5Fabric 5: Cut 2 strip(s) 3-7/8 inches wide. Subcut into 18 squares. Cut 5 strip(s) 2-1/2 inch(es) wide for binding.
Backing & Batting: 47 by 47 inches, including a 2 inch allowance on all sides.

Instructions

Figure 1 - half square triangles from squares

Half Square Triangles from squares

  1. Match one square each of fabric pairs listed below, right sides together.
  2. Draw a diagonal line from corner to corner on wrong side of lighter fabric.
  3. Sew 1/4 inch seam on both side of diagonal line.
  4. Cut units apart on drawn diagonal line.
  5. Press seam to one side.
  6. Makes 2 units per square pair.
Each block needs 4 half square triangle units per fabric pair listed below. Make 36 total for each pair.
  • Fabrics 1 and 2
  • Fabrics 1 and 3
  • Fabrics 1 and 4
  • Fabrics 1 and 5
Figure 2 - block layout

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.

Next layout blocks as desired. Sew first columns first, then rows using a 1/4 inch seam. Press seams to one side.

Border instructions

Border

  1. Cut and/or piece 2 strips of border fabric the length of quilt top measuring from middle.
  2. Sew borders to sides using 1/4 inch seam.
  3. Press toward border.
  4. Cut and/or piece 2 strips of remaining border fabric strips the width of quilt top measuring from middle.
  5. Sew borders to top and bottom using 1/4 inch seam.
  6. Press toward border.

Finishing

Sandwich:
  1. Place pressed backing right side down on a flat surface large enough to lay flat; tape in place at sides, then corners.
  2. Lay batting on top of backing and smooth wrinkles; tape in place at sides, then corners. (If using slippery batting, spray baste to baking and top.)
  3. Put pressed quilt on top right side up.
  4. Smooth borders and blocks square, pushing excess toward middle. Quilting will take up slack and quilt will hang better.
  5. Pin baste 3 to 4 inches apart in quarters down length and width. Finish pin basting each quarter 3 to 4 inches apart.
Quilting:

Quilt as desired using a walking foot. Adjust presser foot pressure to accomodate quilt thickness to prevent backing from sliding while quilting.

Finishing instructions
Binding:
  • If the number of binding strips are greater than 1, sew strips together by laying ends right sides together forming an L.
  • Sew on diagonal where fabrics cross from upper left to lower right.
  • Trim excess to 1/4 inch.
  • Repeat to make a continuous strip; press seams open.
  • Fold and press strip lengthwise in half wrong sides together.
  • Leaving a 5 inch tail, sew binding to quilt top matching raw edges with a 1/4 inch seam allowance.
  • Stop 1/4 inch before corner with needle down.
  • Pivot work as if to sew next side and reverse sew off quilt top.
  • Fold binding back, creating a 45 degree fold, then fold forward matching fold to previously sewn side.
  • Continue sewing binding, and repeat above for each corner.
  • Stop sewing approximately 5 inches from beginning.
  • Unfold and overlap ends.
  • Cut at an approximate 45 degree angle somewhere where both ends overlap.
  • Match ends wrong sides together, leaving equal dog ears.
  • Sew together with a 1/4 inch seam allowance.
  • Refold binding and finish sewing to quilt.
  • Fold binding to back and handstitch to finish using a blind stitch.