The King's Crown Quilt Block Pattern

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How to Sew The King's Crown Quilt Block

The King's Crown quilt block is a visually striking design that adds elegance to any quilt project. Using half-square triangles and two contrasting fabrics, the crown shape emerges beautifully when the units are assembled!

Materials Needed

• Two contrasting fabrics (one for the crown, one for the background)
• Cutting mat, rotary cutter, and quilting ruler
• Sewing machine and thread
• Iron and pins
• Scissors

Step 1: Cut Your Fabric

• Crown fabric: (4) 4½" squares and (8) 3" squares
• Background fabric: (8) 3" squares and (4) 4½" squares

Step 2: Make the Half-Square Triangles (HSTs)

1. Pair each 4½" crown fabric square with a 4½" background fabric square, right sides together.
2. Draw a diagonal line from corner to corner on the back of the lighter fabric.
3. Sew a ¼" seam on both sides of the drawn line.
4. Cut along the marked line to create two HSTs per pair.
5. Press seams open or toward the darker fabric.

Step 3: Assemble the Crown Units

1. Take four HSTs and four 3" background fabric squares.
2. Arrange them into a square block: place two HSTs on opposite corners with their darker sides facing outward, and a background square in the remaining two corners.
3. Sew the pieces together with a ¼" seam allowance.
4. Repeat to create four crown units total.

Step 4: Assemble The King's Crown Block

1. Arrange the four crown units to form The King's Crown pattern, ensuring the HSTs create the crown shape.
2. Sew the crown units together, carefully matching the seams.
3. Press seams open or toward the darker fabric.

Step 5: Finishing Touches

1. Trim any excess fabric and square up the block to your desired size.
2. Press the block flat with an iron.

Congratulations — your King's Crown quilt block is complete! Repeat these steps to make as many blocks as needed for your quilt project.

Tips for success: Accurate cutting and precise ¼" seam allowances are crucial for crisp points. Press seams carefully to reduce bulk, and take your time aligning seams for a polished finish. Experiment with different fabric combinations to create unique variations!

How to Resize Quilt Blocks

The first step in modifying any quilt block is to decide on your finished block size. You can base this on doubling a pattern, cutting it in half, or working with your available fabric.

Note: When working from a pattern's cutting instructions, remove the seam allowance before scaling. For example, if your pattern calls for 3½″ squares, subtract the seam allowance (½″), double the finished size (3″ → 6″), then add the seam allowance back (½″) — giving you a 6½″ cut piece.

Resizing Square Blocks

Add ½″ to your finished block measurement. For a 4″ finished square, cut a 4½″ square of fabric.

Resizing Rectangular Blocks

Add ½″ to both the length and width. To double a 3″ × 4″ block, cut a 6½″ × 8½″ rectangle.

Resizing Half-Square Triangle Blocks

Add 7/8″ to the desired finished block size. For a 4″ finished HST block, cut 4⅞″ squares.

Resizing Quarter Square Triangle Blocks

Add 1¼″ to the desired finished block size. For a 4″ finished block, cut 5¼″ squares.