Northumberland Star quilt block

A 6″ finished block measures 6½″ before it’s sewn into a quilt. Each fabric’s yardage is the least that cuts its strips across the width of fabric, with a strip to spare for straightening.

Worked out by @quarterinch/cutting · ¼″ seams included · strips cut across 42″ of usable width · the letters are the pieces the sewing steps name

A 9″ finished block measures 9½″ before it’s sewn into a quilt. Each fabric’s yardage is the least that cuts its strips across the width of fabric, with a strip to spare for straightening.

Worked out by @quarterinch/cutting · ¼″ seams included · strips cut across 42″ of usable width · the letters are the pieces the sewing steps name

A 12″ finished block measures 12½″ before it’s sewn into a quilt. Each fabric’s yardage is the least that cuts its strips across the width of fabric, with a strip to spare for straightening.

Worked out by @quarterinch/cutting · ¼″ seams included · strips cut across 42″ of usable width · the letters are the pieces the sewing steps name

For the 6″ block. Choose another size above and these steps follow it.

1. Make 16 half-square triangle units: Background and Dark

   Sew a Background B triangle to a Dark B triangle along their long edges. Press toward the Dark. Each measures 1¼″ (¾″ finished).

2. Make 16 half-square triangle units: Dark and Medium

   Sew a Dark B triangle to a Medium B triangle along their long edges. Press toward the Dark. Each measures 1¼″ (¾″ finished).

3. Sew the units and pieces into 8 rows

   Lay out the units and pieces as in the picture and sew them into 8 rows. Press the seams in row 1 to the left, row 2 to the right, and so on, so they nest when the rows are joined.

4. Join the rows

   Join the 8 rows, matching and nesting the seams where they meet. Press the long seams open or to one side. The block measures 6½″ (6″ finished).

For the 9″ block. Choose another size above and these steps follow it.

1. Make 16 half-square triangle units: Background and Dark

   Sew a Background B triangle to a Dark B triangle along their long edges. Press toward the Dark. Each measures 1⅝″ (1⅛″ finished).

2. Make 16 half-square triangle units: Dark and Medium

   Sew a Dark B triangle to a Medium B triangle along their long edges. Press toward the Dark. Each measures 1⅝″ (1⅛″ finished).

3. Sew the units and pieces into 8 rows

   Lay out the units and pieces as in the picture and sew them into 8 rows. Press the seams in row 1 to the left, row 2 to the right, and so on, so they nest when the rows are joined.

4. Join the rows

   Join the 8 rows, matching and nesting the seams where they meet. Press the long seams open or to one side. The block measures 9½″ (9″ finished).

For the 12″ block. Choose another size above and these steps follow it.

1. Make 16 half-square triangle units: Background and Dark

   Sew a Background B triangle to a Dark B triangle along their long edges. Press toward the Dark. Each measures 2″ (1½″ finished).

2. Make 16 half-square triangle units: Dark and Medium

   Sew a Dark B triangle to a Medium B triangle along their long edges. Press toward the Dark. Each measures 2″ (1½″ finished).

3. Sew the units and pieces into 8 rows

   Lay out the units and pieces as in the picture and sew them into 8 rows. Press the seams in row 1 to the left, row 2 to the right, and so on, so they nest when the rows are joined.

4. Join the rows

   Join the 8 rows, matching and nesting the seams where they meet. Press the long seams open or to one side. The block measures 12½″ (12″ finished).