Quilt block · Seven-patch · Advanced
Corner Posts quilt block
A seven-by-seven: medium squares at the corners and round the center, and dark squares and half-square triangle units reaching in from each corner.
What to cut for one 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.
Background · Snow in the picture
17 squares and 16 triangles
- B16 squares 1½″then cut with template B
- A17 squares 1⅜″then cut with template A
Dark · Navy in the picture
8 squares and 16 triangles
- B16 squares 1½″then cut with template B
- A8 squares 1⅜″then cut with template A
Medium · Denim in the picture
8 squares
- A8 squares 1⅜″then cut with template A
Between the lines. Corner Posts cuts cleanly at 3½″ or 7″. At 6″ its squares are ⁶⁄₇″, so they need templates.
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.
Background · Snow in the picture
17 squares and 16 triangles
- A17 squares 1⅞″then cut with template A
- B16 squares 1⅞″then cut with template B
Dark · Navy in the picture
8 squares and 16 triangles
- A8 squares 1⅞″then cut with template A
- B16 squares 1⅞″then cut with template B
Medium · Denim in the picture
8 squares
- A8 squares 1⅞″then cut with template A
Between the lines. Corner Posts cuts cleanly at 7″ or 10½″. At 9″ its squares are 1²⁄₇″, so they need templates.
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.
Background · Snow in the picture
17 squares and 16 triangles
- B16 squares 2⅜″then cut with template B
- A17 squares 2¼″then cut with template A
Dark · Navy in the picture
8 squares and 16 triangles
- B16 squares 2⅜″then cut with template B
- A8 squares 2¼″then cut with template A
Medium · Denim in the picture
8 squares
- A8 squares 2¼″then cut with template A
Between the lines. Corner Posts cuts cleanly at 10½″ or 14″. At 12″ its squares are 1⁵⁄₇″, so they need templates.
Worked out by @quarterinch/cutting · ¼″ seams included · strips cut across 42″ of usable width · the letters are the pieces the sewing steps name
How it’s sewn
For the 6″ block. Choose another size above and these steps follow it.
- Make 16 half-square triangle units
Sew a Background B triangle to a Dark B triangle along their long edges. Press toward the Dark. Its size isn’t on the ⅛″ ruler at this block size, so sew it as cut and don’t trim it.
- Sew the units and pieces into 7 rows
Lay out the units and pieces as in the picture and sew them into 7 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.
- Join the rows
Join the 7 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.
- Make 16 half-square triangle units
Sew a Background B triangle to a Dark B triangle along their long edges. Press toward the Dark. Its size isn’t on the ⅛″ ruler at this block size, so sew it as cut and don’t trim it.
- Sew the units and pieces into 7 rows
Lay out the units and pieces as in the picture and sew them into 7 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.
- Join the rows
Join the 7 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.
- Make 16 half-square triangle units
Sew a Background B triangle to a Dark B triangle along their long edges. Press toward the Dark. Its size isn’t on the ⅛″ ruler at this block size, so sew it as cut and don’t trim it.
- Sew the units and pieces into 7 rows
Lay out the units and pieces as in the picture and sew them into 7 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.
- Join the rows
Join the 7 rows, matching and nesting the seams where they meet. Press the long seams open or to one side. The block measures 12½″ (12″ finished).
Blocks like it
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More like this: Seven-patch quilt blocks · all quilt blocks
Questions
Short answers.
Something else? A real person replies.
hello@quarterinch.app
What size should I make it?
On its 7 × 7 grid, 6″, 9″ and 12″ put some pieces between the ⅛″ marks, so they need templates. It cuts cleanly at 10½″ or 14″.
Can I paper piece it?
Yes. It splits into 7 sections (A, B, C, D, E, F and G), each sewn on its own paper in order and then joined with straight seams. In Quarter Inch, the Foundations tab prints its papers at true size (with Quilter).
Is it a good block for a beginner?
It’s an advanced block: 65 pieces in 2 different shapes and 16 points to match. Practise the hard seams on scraps first. We work the level out from the block’s own geometry, never by eye.