60º Quilt Triangles and Diamonds Sew Easy Lesson

Cut 60° Quilt Triangles and Diamonds the easy way.

Getting Started

We simplified the construction of Blue Lagoon by cutting the stars as quilt triangles rather than diamonds. We used the From Marti Michell 60° Triangle Ruler™ to cut the triangles and a regular ruler to cut the 60-degree diamonds.

Cutting Quilt Triangles

1. Make a strip set the required width for your project or slightly wider. (For Blue Lagoon on page 80, the quilt strips should be at least 5 3/4″ wide.)

2. Position 60-degree Triangle-Ruler™ on strip set with line corresponding to the finished side length of triangle aligned with bottom edge of strip set. For example, for Blue Lagoon, use the 5 3/4″ line (Photo A).

3. Cut along both sides of ruler (Photo B).

4. Reposition line on ruler along opposite edge of strip set, aligning side of ruler along angled cut edge. Cut along edge of ruler (Photo C).

5. Continue rotating ruler to cut desired number of triangles. (Photo D).


Photo A

Photo B

Photo C

Photo D

Cutting Quilt Diamonds

1. Cut strip correct width for your quilting project. (For Blue Lagoon, cut strips 51⁄2″ wide.)

2. Using regular ruler, trim end of strip at 60-degree angle. (Photo E).

3. Position line on ruler that corresponds to the strip width on the angled edge. Cut along edge of ruler to make 1 diamond (Photo F). Continue in this manner to cut desired number of diamonds.


Photo E

Photo F

The Final Word

Quilt rotary cutting diamonds is a bit tricky. I like to check them for accuracy by folding them in half either vertically or horizontally from point to point. Because a diamond is symmetrical, the raw edges and points should meet when they are folded.

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Articles, Love of Quilting July/August 2004, Sew Easy Lessons