Hourglass Block

by JOANN |

Item # 42337495P601
Beginner 1-2 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, Avery Dots Green Blender (Green)
  • Iron & Ironing Board

DIRECTIONS:

FABRIC KEY:
  • BKGD (background) is white or beige fabric
  • B3 is green fabric
  1. HOURGLASS 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. BACKGROUND FABRIC (BKGD) WHITE OR BEIGE:
    • Cut one 6 1/2" strip.
    • Sub-cut five 6 1/2" squares.

  3. FABRIC B3 GREEN:
    • Cut one 6 1/2" strip.
    • Sub-cut five 6 1/2" squares.

  4. SEWING HALF SQUARE TRIANGLES:
    • Sew with a 1/4" seam allowance all throughout project.
    • Draw a diagonal line across the wrong side of each of the 6 1/2" BKGD Fabric squares.
    • To make sure the line goes perfectly down the center of the square, position the square with the top and bottom points directly over a grid line on the cutting or pressing mat.
    • Position the right edge of the ruler so that it's right up against the ruled line on the mat (not over the line).
    • Draw the line against the ruler using a sharp pencil or erasable pen.
    • Diagram 1
    • Pair a marked BKGD Fabric square with a 6 1/2" Fabric B3 square.
    • Pin both pieces together (RST) and sew 1/4" away from both sides of the drawn line.
    • Carefully cut on the line.
    • This will make two half square triangle units. Do not press yet.
    • Diagram 2 Diagram 3 Diagram 4 Diagram 5 Diagram 6

  5. SEWING QUARTER SQUARE TRIANGLES:
    • Finger press seam allowance on each half square triangle unit toward Fabric 3B.
    • Use a rotary cutter and quilting ruler to carefully cut the two half square triangle units in half.
    • This will make two sets of opposite quarter square triangle units.
    • Make one Stack A (with the long side of the triangle unit on the right and Fabric B3 on the top).
    • Use an iron to press seam allowance on Stack A units toward Fabric B3.
    • Make one Stack B (with the long side of the triangle unit on the left and Fabric B3 on the top).
    • Use an iron to press seam allowance on Stack B units toward BKGD Fabric.
    • Diagram 7 Diagram 8 Diagram 9
    • Gather the two Stack A units and sew together.
    • Gather the two Stack B units and sew together.
    • Diagram 10 Diagram 11 Diagram 12 Diagram 13
    • Pin near the top to keep points in place for starting out, add a pin to where the seams meet in the center, and add one or two pins towards the bottom to keep bottom points together.
    • Press seam allowances from the back of the unit counterclockwise.
    • Diagram 14 Diagram 15
    • Sew the remaining Fabric B3 and BKGD Fabric squares together in the same manner to complete 10 Hourglass quilt blocks.

  6. TRIMMING THE BLOCKS:
    • Lay the pressed block on a cutting mat right side up.
    • Position a square quilting ruler over the block with numbers beginning from the right side of the ruler.
    • Line up the ruler so that the very center of the block (black dot) is 2 3/4" * from the top and right edges of the ruler.
    • Line up a diagonal seam with the diagonal line (black dotted line) on the ruler.
    • *The block will be trimmed to 5 1/2", so 2 3/4" would be the center mark.
    • Diagram 16
    • Use a rotary cutter to trim the top and right sides.
    • Turn the trimmed block counterclockwise till the trimmed edges are lined up with the 5 1/2" lines on the ruler.
    • Use a rotary cutter to trim the top and right sides.

  7. SEW A ROW OF DIAMONDS:
    • Sew Hourglass blocks into pairs.
    • Press seam allowances open.
    • The pair should measure between 10 1/2" but can vary depending on your 1/4" seam allowance.
    • Sew the pairs together.
    • Press seam allowances open.
    • Diagram 17

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