Quilt block · Five-patch · Intermediate
Watermill quilt block
A light center square with a wide strip and a narrow dark one on each side, and in each corner a big half-square triangle edged with two dark strips.
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
1 center square and 4 triangles
- A4 squares 2⅜″then cut with template A
- F1 square 1¾″then cut with template F
Dark · Navy in the picture
12 strips
- C4 rectangles 3″ × 1⅛″then cut with template C
- B4 rectangles 2⅜″ × 1⅛″then cut with template B
- D4 rectangles 1¾″ × 1⅛″then cut with template D
Medium · Denim in the picture
4 triangles
- A4 squares 2⅜″then cut with template A
Light · Powder Blue in the picture
4 rectangles
- E4 rectangles 2⅜″ × 1¾″then cut with template E
Between the lines. Watermill cuts cleanly at 5″ or 7½″. At 6″ its rectangles are ³⁄₅″ wide, 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
1 center square and 4 triangles
- A4 squares 3¼″then cut with template A
- F1 square 2⅜″then cut with template F
Dark · Navy in the picture
12 strips
- C4 rectangles 4⅛″ × 1½″then cut with template C
- B4 rectangles 3¼″ × 1½″then cut with template B
- D4 rectangles 2⅜″ × 1½″then cut with template D
Medium · Denim in the picture
4 triangles
- A4 squares 3¼″then cut with template A
Light · Powder Blue in the picture
4 rectangles
- E4 rectangles 3¼″ × 2⅜″then cut with template E
Between the lines. Watermill cuts cleanly at 7½″ or 10″. At 9″ its rectangles are ⁹⁄₁₀″ wide, 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
1 center square and 4 triangles
- A4 squares 4¼″then cut with template A
- F1 square 3″then cut with template F
Dark · Navy in the picture
12 strips
- C4 rectangles 5⅜″ × 1¾″then cut with template C
- B4 rectangles 4⅛″ × 1¾″then cut with template B
- D4 rectangles 3″ × 1¾″then cut with template D
Medium · Denim in the picture
4 triangles
- A4 squares 4¼″then cut with template A
Light · Powder Blue in the picture
4 rectangles
- E4 rectangles 4⅛″ × 3″then cut with template E
Between the lines. Watermill cuts cleanly at 10″ or 12½″. At 12″ its rectangles are 1¹⁄₅″ wide, 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 4 half-square triangle units
Sew a Background A triangle to a Medium A triangle along their long edges. Press toward the Medium. Its size isn’t on the ⅛″ ruler at this block size, so sew it as cut and don’t trim it.
- Make 4 sections
Sew a Dark D piece and a Light E piece together in a column. Press the seams to one side. Its size isn’t on the ⅛″ ruler at this block size, so sew it as cut and don’t trim it.
- Make 4 sections
Sew a half-square triangle unit and a Dark B piece together in a row. Press toward the plain pieces. Its size isn’t on the ⅛″ ruler at this block size, so sew it as cut and don’t trim it.
- Make 4 sections
Sew a section and a Dark C piece together in a column. Press toward the plain pieces. 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 3 rows
Lay out the units and pieces as in the picture and sew them into 3 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 3 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 4 half-square triangle units
Sew a Background A triangle to a Medium A triangle along their long edges. Press toward the Medium. Its size isn’t on the ⅛″ ruler at this block size, so sew it as cut and don’t trim it.
- Make 4 sections
Sew a Dark D piece and a Light E piece together in a column. Press the seams to one side. Its size isn’t on the ⅛″ ruler at this block size, so sew it as cut and don’t trim it.
- Make 4 sections
Sew a half-square triangle unit and a Dark B piece together in a row. Press toward the plain pieces. Its size isn’t on the ⅛″ ruler at this block size, so sew it as cut and don’t trim it.
- Make 4 sections
Sew a section and a Dark C piece together in a column. Press toward the plain pieces. 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 3 rows
Lay out the units and pieces as in the picture and sew them into 3 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 3 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 4 half-square triangle units
Sew a Background A triangle to a Medium A triangle along their long edges. Press toward the Medium. Its size isn’t on the ⅛″ ruler at this block size, so sew it as cut and don’t trim it.
- Make 4 sections
Sew a Dark D piece and a Light E piece together in a column. Press the seams to one side. Its size isn’t on the ⅛″ ruler at this block size, so sew it as cut and don’t trim it.
- Make 4 sections
Sew a half-square triangle unit and a Dark B piece together in a row. Press toward the plain pieces. Its size isn’t on the ⅛″ ruler at this block size, so sew it as cut and don’t trim it.
- Make 4 sections
Sew a section and a Dark C piece together in a column. Press toward the plain pieces. 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 3 rows
Lay out the units and pieces as in the picture and sew them into 3 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 3 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
More like this: Five-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 10 × 10 grid, 6″, 9″ and 12″ put some pieces between the ⅛″ marks, so they need templates. It cuts cleanly at 10″ or 12½″.
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 intermediate block: 25 pieces in 6 different shapes. Take it slowly and check each piece against the list. We work the level out from the block’s own geometry, never by eye.