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  1. Home Chevron Right
  2. How to quilt Chevron Right
  3. Cutting Chevron Right
  4. Cutting Half- and Quarter-Square Triangles

Cutting Half- and Quarter-Square Triangles

June 14, 2013
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Use these tips to cut half- and quarter-square triangles. Instructions are provided for right-handed and left-handed cutting.
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1 of 21

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Cutting Half-Square Triangles (right-handed)

1. Square up the fabric.

2. Cut the fabric in strips as wide as the desired finished width of the triangle-squares, plus 7/8" for seam allowances. For example, for a 3" finished half-square triangle, cut a 3-7/8"-wide fabric strip.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

1 of 21

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2 of 21

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Cutting Half-Square Triangles (right-handed)

3. Square up one end of each strip.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

2 of 21

3 of 21

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Cutting Half-Square Triangles (right-handed)

4. Using a ruler, cut the strip into lengths equal to the strip's width. In this example, the strip would be cut into 3-7/8"-long pieces.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

3 of 21

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4 of 21

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Cutting Half-Square Triangles (right-handed)

5. Position the ruler diagonally across a square and cut the square in half to make two equal-size right triangles.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

4 of 21

5 of 21

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Cutting Half-Square Triangles (left-handed)

1. Square up the fabric.

2. Cut the fabric in strips as wide as the desired finished width of the triangle-squares, plus 7/8" for seam allowances. For example, for a 3" finished half-square triangle, cut a 3-7/8"-wide fabric strip.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

5 of 21

6 of 21

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Cutting Half-Square Triangles (left-handed)

3. Square up one end of each strip.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

6 of 21

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7 of 21

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Cutting Half-Square Triangles (left-handed)

4. Using a ruler, cut the strip into lengths equal to the strip's width. In this example, the strip would be cut into 3-7/8"-long pieces.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

7 of 21

8 of 21

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Facebook Tweet Mail Email iphone Send Text Message

Cutting Half-Square Triangles (left-handed)

5. Position the ruler diagonally across the square and cut the square in half to make two equal-size right triangles.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

8 of 21

9 of 21

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Cutting Quarter-Square Triangles (right-handed)

1. Square up the fabric.

2. Cut the fabric in strips as wide as the desired width of the quarter-square triangle, plus 1-1/4" for seam allowances. For example, for a 3" finished quarter-square triangle, cut a 4-1/4"-wide fabric strip.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

9 of 21

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10 of 21

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Cutting Quarter-Square Triangles (right-handed)

3. Square up one end of each strip.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

10 of 21

11 of 21

Pin
Facebook Tweet Mail Email iphone Send Text Message

Cutting Quarter-Square Triangles (right-handed)

4. Using a ruler, cut the strip into lengths equal to the strip's width. In this example, the strip would be cut into 4-1/4"-long pieces.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

11 of 21

12 of 21

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Cutting Quarter-Square Triangles (right-handed)

5. Position the ruler diagonally across square and cut the square in half to make two equal-size right triangles. Do not move or pick up the triangles.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

12 of 21

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13 of 21

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Cutting Quarter-Square Triangles (right-handed)

6. Position the ruler diagonally across the cut square in the opposite direction and cut the square in half again to make a total of four equal-size triangles.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

13 of 21

14 of 21

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Cutting Quarter-Square Triangles (left-handed)

1. Square up the fabric.

2. Cut the fabric in strips as wide as the desired width of the quarter-square triangle, plus 1-1/4" for seam allowances. For example, for a 3" finished quarter-square triangle, cut a 4-1/4"-wide fabric strip.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

14 of 21

15 of 21

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Cutting Quarter-Square Triangles (left-handed)

3. Square up one end of each strip.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

15 of 21

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16 of 21

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Cutting Quarter-Square Triangles (left-handed)

4. Using a ruler, cut the strip into lengths equal to the strip's width. In this example, the strip would be cut into 4-1/4"-long pieces.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

16 of 21

17 of 21

Pin
Facebook Tweet Mail Email iphone Send Text Message

Cutting Quarter-Square Triangles (left-handed)

5. Position the ruler diagonally across square from corner to corner and cut the square in half to make two equal-size right triangles. Do not move or pick up the triangles.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

17 of 21

18 of 21

Pin
Facebook Tweet Mail Email iphone Send Text Message

Cutting Quarter-Square Triangles (left-handed)

6. Position the ruler diagonally across the square from corner to corner in the opposite direction and cut the square in half again to make a total of four equal-size triangles.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

18 of 21

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Advertisement
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19 of 21

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Cutting Quarter-Square Triangles (left-handed)

3. Square up one end of each strip.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

19 of 21

20 of 21

Pin
Facebook Tweet Mail Email iphone Send Text Message

Cutting Quarter-Square Triangles (left-handed)

4. Using a ruler, cut the strip into lengths equal to the strip's width. In this example, the strip would be cut into 4-1/4"-long pieces.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

20 of 21

21 of 21

Pin
Facebook Tweet Mail Email iphone Send Text Message

Cutting Quarter-Square Triangles (left-handed)

6. Position the ruler diagonally across the square from corner to corner in the opposite direction and cut the square in half again to make a total of four equal-size triangles.

  • Fabric-Free Quilts
  • Traditions Remembered
  • Quilting Design Gallery

21 of 21

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1 of 21 Cutting Half-Square Triangles (right-handed)
2 of 21 Cutting Half-Square Triangles (right-handed)
3 of 21 Cutting Half-Square Triangles (right-handed)
4 of 21 Cutting Half-Square Triangles (right-handed)
5 of 21 Cutting Half-Square Triangles (left-handed)
6 of 21 Cutting Half-Square Triangles (left-handed)
7 of 21 Cutting Half-Square Triangles (left-handed)
8 of 21 Cutting Half-Square Triangles (left-handed)
9 of 21 Cutting Quarter-Square Triangles (right-handed)
10 of 21 Cutting Quarter-Square Triangles (right-handed)
11 of 21 Cutting Quarter-Square Triangles (right-handed)
12 of 21 Cutting Quarter-Square Triangles (right-handed)
13 of 21 Cutting Quarter-Square Triangles (right-handed)
14 of 21 Cutting Quarter-Square Triangles (left-handed)
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17 of 21 Cutting Quarter-Square Triangles (left-handed)
18 of 21 Cutting Quarter-Square Triangles (left-handed)
19 of 21 Cutting Quarter-Square Triangles (left-handed)
20 of 21 Cutting Quarter-Square Triangles (left-handed)
21 of 21 Cutting Quarter-Square Triangles (left-handed)

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Cutting Half- and Quarter-Square Triangles
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