September BOTM: Old Maid’s Puzzle

The Stash Builder Box September Block of the Month is the Old Maid’s Puzzle Block. It’s also sometimes called Cat’s Cradle or Tennessee. It is made up of a combination of squares and half square triangles. It’s a simple block that looks complicated, but is surprisingly easy to make. These instructions are for a 9 inch finished block, just like all of the other SBB BOTMs. All seam allowances are ¼”.

Cutting Instructions

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Block Construction

1. Assemble the half square triangles. Place one 3 ⅞” square of Fabric A on top of one 3 ⅞” square of Fabric B, right sides together. Draw a straight line on the diagonal down the center of the square on the wrong side of the fabric.

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2. Sew a seam ¼” inch away from the center line on both sides.

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3. Cut down the center line. Repeat steps one through three for all three sets of 3 ⅞” squares.

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4. You will have six half square triangle sets. Open them up and press to the dark side.

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5. Trim the squares to 3 ½” on all sides.

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6. Lay out the blocks according to the diagram below and sew the pieces together to form three rows.

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7. Press the seams on the first and third rows toward the outside, and press the seams on the second row toward the inside.

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8. Sew the rows together to form a block. Trim to 9” on all sides.

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You can also switch up the look of the block by using a third fabric for the 3 ½” squares. We would love to see your creativity with this block. Be sure to share your Old Maid’s Puzzle blocks with us using #BOTMSBB. We can’t wait to see the unique spin you put on your block!