Mrs Keller's Nine Patch is made with squares and half square triangles in a 5 by 5 square grid layout and uses 3 different fabrics. To do the calculations, javascript must be enabled. While every effort is made to be sure of accuracy, I am unable to test every variation. Before you cut up large amounts of fabric, cut and sew a test block or two. If you find any errors, please email me at "jeannethro2 at yahoo dot com".

Settings

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Cutting & Piecing Methods

Block Size

Columns

Rows

Fabric Width

Finished Size:
18 inches by 18 inches
Mrs Keller's Nine Patch block Mrs Keller's Nine Patch block Mrs Keller's Nine Patch block
Mrs Keller's Nine Patch block Mrs Keller's Nine Patch block Mrs Keller's Nine Patch block
Mrs Keller's Nine Patch block Mrs Keller's Nine Patch block Mrs Keller's Nine Patch block

Fabrics

fabric 1Fabric 1: 1/4 yd
Cut 3 strips 2½ inches wide. Sub cut into 45 squares.
fabric 2Fabric 2: 5/8 yd
Cut 8 strips 2½ inches wide. Sub cut into 36 squares and 108 half square triangles using a half square triangle ruler.
fabric 3Fabric 3: 5/8 yd
Cut 8 strips 2½ inches wide. Sub cut into 36 squares and 108 half square triangles using a half square triangle ruler.

Instructions

Half Square Triangle

Half Square Triangle instructions

  • Match 1 strip of each fabric right sides together.
  • Using a side right triangle ruler, cut half square triangles. Move ruler upside down for next cut when necessary.
  • Sew ¼ inch seam on long side of triangle pair.
  • Press seam to one side.

Make 108 half square triangle units with fabric 2 & 3.

Mrs Keller's Nine Patch Finishing

Mrs Keller's Nine Patch Finishing instructions

Layout each Mrs Keller's Nine Patch block units as shown and chain piece together first rows, then columns using a ¼ inch seam.

Make 9 blocks.

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