Windmill Block

by JOANN |

Item # 42337495P605
Intermediate 3-5 Hours

SUPPLIES & TOOLS:

  • Rotary Cutter
  • 18"x 24" Cutting Mat
  • 6"x 24" Ruler
  • 12 1/2" Square Ruler
  • Basic Sewing Supplies
  • 1/4yd Fabric, White or Beige
  • 1/4yd Fabric, Light Teal Tonal Batik
  • 1/4yd Fabric, Medium Blue Polka Dots

DIRECTIONS:

FABRIC KEY:
  • BKGD (background) is White or Beige fabric
  • A2 is Light Teal Tonal Batik fabric
  • A4 is Medium Blue Polka Dots fabric

  1. SAWTOOTH STAR BLOCK CUTTING CHART:
    • All strips will be cut across fabric width (selvage to selvage) making strip length 42-44".
    • Strips will be sub-cut to squares or rectangles as indicated.

  2. Label two bags as follows:
    • 1. Half square cut triangle bag
    • 2. Quarter square cut triangle bag
    • Place pieces in corresponding bags to help keep project organized.

  3. BACKGROUND FABRIC (BKGD) WHITE OR BEIGE:
    • Cut one 6 1/4" strip.
    • Sub-cut five 6 1/4" squares (Quarter square triangle cut bag)

  4. FABRIC A2 LIGHT TEAL:
    • Cut two 5 7/8" strips.
    • Sub-cut ten 5 7/8" squares (Half square triangle cut bag)

  5. FABRIC A4 MEDIUM BLUE:
    • Cut one 6 1/4" strip.
    • Sub-cut five 6 1/4" squares (Quarter square triangle cut bag)

  6. CUTTING SQUARES IN HALF:
    • Use pieces from the Half Square Triangle Cut Bag.Double check the square size before cutting triangles.
    • Place one of the ten 5 7/8" Fabric A2 squares on the cutting mat (it will be easier to see the corners of the square if the square is NOT lined up with the grid lines). Position the right edge of the ruler so that it lines up with the corners of the block. Look closely at the corners to be sure they line up perfectly before cutting.
    • Use a rotary cutter to cut along the edge of the ruler.
    • This will make two half cut triangles. Put aside and continue cutting the remaining nine Fabric A2 squares to make a total of 20 half cut triangles.
    • Diagram 1 Diagram 2 Diagram 3
    • Place triangles in the Half Square Triangle Cut Bag.

  7. CUTTING SQUARES IN QUARTERS:
    • Use pieces from the Quarter Square Triangle Cut Bag. Double check the square size before cutting triangles.
    • Place one of the five 6 1/4" BKGD Fabric squares on the cutting mat in the same manner as when cutting the half triangle squares and carefully cut in half diagonally. Leave triangles in place.
    • Turn cutting mat 90 and position the ruler to cut down the center of the two triangles in place. Use a rotary cutter to cut along the edge of the ruler. This will make four quarter cut triangles. Put aside and continue cutting the remaining four BKGD Fabric squares to make a total of 20 quarter cut triangles.
    • Place triangles in the Quarter Square Triangle Cut Bag.
    • Cut the five 6 1/4" Fabric A4 squares in the same manner make a total of 20 quarter cut triangles.
    • Diagram 4 Diagram 5 Diagram 6 Diagram 7
    • Once all cutting is completed you should have 20 large Fabric A2 triangles and 20 small BKGD and A4 triangles.
    • Diagram 8

  8. SEWING A QUARTER CUT TRIANGLE UNITS:
    • Use triangles from the Quarter Square Triangle Cut Bag.
    • Sew with a 1/4" seam allowance throughout project.
    • Sew across a fabric leader (a small piece of fabric folded in half once) (A), without clipping so the leader will be connected to the pieces to be sewn next by the threads. This will keep corners from bunching. Once the leader is sewn across, position the triangles under the presser foot with the right edge of the fabric lined up with the right edge of the presser foot and sew a 1/4" seam allowance. Do not sew over pins.
    • When you get to the last pin, stop sewing, hold corners in place with stitch ripper or stiletto (C). Remove pin and sew to the end. This will help to keep corners together.
    • Continue sewing the remaining triangle pieces together one right another without clipping threads in between.
    • Make 20 BKGD/Fabric A4 pairs.
    • Pin and the short sides of the triangles together (RST).
    • Sew triangles together and press seam allowances toward Fabric A4, and trim tips.
    • Diagram 9 Diagram 10 Diagram 11 Diagram 12
    • You should have 20 BKGD/Fabric A4 units.

  9. SEWING ALL TRIANGLE UNITS TOGETHER:
    • Use triangles from the Half Square Triangle Cut Bag and BKGD/Fabric A4 units.
    • Pair the 20 sewn BKGD/Fabric A4 units with the 20 Fabric A2 cut triangles.
    • Pin long sides together (RST).
    • Sew units together and press seam allowances toward Fabric A2 and trim tips.
    • Diagram 13 Diagram 14 Diagram 15 Diagram 16
    • You should have 20 BKGD/Fabric A4/Fabric A2 units.

  10. SEWING A WINDMILL BLOCK:
    • Sew units into 10 identical pairs, press seam allowances toward Fabric A2.
    • Sew pairs together and press seam allowances toward the Fabric A2 triangles.
    • To press seam allowances in opposite directions, loosen the threads slightly in the center and swirl seam allowances to make a tiny pinwheel. Finger press seam allowances toward the Fabric A2 triangles and press in place with an iron.
    • Diagram 17 Diagram 18 Diagram 19 Diagram 20
    • Measure each of the five Windmill blocks.
    • NOTE: The block size should be 10 1/2", but block sizes may vary from as small as 10 1/4" up to 10 5/8", depending on how accurate your 1/4" seam allowance is. Write down the average measurement of your five blocks on your instruction sheet. You'll need that number later for future blocks and finishing steps.
    • Sew a Row of Windmill Blocks.
    • Pin and sew blocks together.
    • Press seam allowances towards blocks 2 and 4.
    • Diagram 21 Diagram 22 Diagram 23

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