Watermill Quilt Block Pattern

  • 01 of 02

    Meet the Watermill Quilt Block Pattern

    Watermill, a Free Quilt Block Pattern
    Watermill Quilt Block Pattern. Janet Wickell

    Watermill is a free quilt block pattern that results in quilt blocks with a finished dimension of 9" x 9". I changed the block just a bit. See those narrow (purplish) bars? They typically have mitered corners, but my version of the block uses straight edged pieces.

    Windmill is easy to construct. It does have four half square triangle units that finish at 2-1/2" x 2-1/2" each -- feel free to either use a different method to construct them or cut squares larger than the 3-3/8" x 3-3/8" shown below if you prefer to sew the units a bit larger than necessary and then trim back for accuracy.

    I used a combo of purple and green for this block. The design works nicely for a scrap quilt, but if you create a themed look it's best to alter the fabrics along those outer edges. For instance, switch the green and purple around at midpoints and rotate the half square triangle units. That way, like-colors won't butt up against each other when quilt blocks are sewn side by side.

    Cutting instructions are for one 9" square Windmills quilt block.

    Green, for block center and outermost bars

    • (1) 3-1/2" x  3-1/2"square
    • (1) 1" x 14-1/2" strip

    Dark Purple, for narrow bars next to half square triangle units

    • (4) 1" x 3" bars
    • (4) 1" x 3-1/2" bars

    Medium Purple, for large side rectangles and half square triangle units

    • (2) 3-3/8" x 3-3/8" squares (or cutting of your choice, see above)
    • (1) 3" x 14-1/2" strip

    Lighter Purple, or other fabric for half square triangle units

    • (2) 3-3/8" x 3-3/8" squares (or cutting of your choice, see above)
    Continue to 2 of 2 below.
  • 02 of 02

    Sew the Watermill Quilt Block

    Watermill Quilt Block Pattern Instructions
    Assemble the Watermill Quilt Block. Janet Wickell

    Assemble the Watermill Quilt Block

    1. Draw a diagonal line from one corner to the opposite corner on each side of the lightest 3-3/8" squares. Use the quick pieced half square triangle unit method to pair one of the squares with a darker purple square of the same size. The result will be (2) units that measure 2-1/2 square each. Repeat to make two more units.
    2. Refer to the illustration, upper right. Sew a 1" x 3" dark bar to the (light) bottom of half square triangle units, make two each in the configurations shown. Press seam allowances either direction. The units are mirror images of each other.
    3. Add a 1" x 3-1/2" bar to the remaining light side of each unit. Press seam allowances either direction.
    4. Sew a 1" x 14-1/2" green strip lengthwise to a medium purple strip of the same length. Press seam allowance towards the wider strip.
    5. Square up one end of the strip set and then cut (4) 3-1/2" segments.
    6. Arrange all components into three rows as shown. Sew patchwork in each row together.
    7. Press seam allowances in adjoining rows in opposite directions and then join the rows, matching seam intersections carefully.
    8. Press the quilt block. It should measure 9-1/2" x 9-1/2".