How to Cut Perfect Diamonds
In the last few years, I’ve been revisiting the diamond shape in patchwork, exploring new design possibilities and experimenting with shading and color. Although I love my chalk and scissors, I had to admit that rotary cutting fabric strips and patches was much faster. But I soon became convinced that there wasn’t a good ruler available to streamline the cutting, trimming and marking of diamond patches. (Trust me, I tried a bunch!)
Finally I decided to design my own ruler, which I call the 60 Degree Perfect Cut Ruler. With it, you can measure and cut up to six inch diamonds, as well as equilateral triangles for six-pointed stars, that come out perfect every time.
You can also use the ruler for strips, so you don’t need one ruler for diamonds and triangles and another for strips. This ruler is great for cutting strips of the desired width, cutting out diamond or triangle patches, and trimming points. You can even mark intersecting angles when cutting Y intersections: simply mark the dots with a chalk mechanical pencil and then sew between the dots. It’s so easy! (There’s a video on my website where I demonstrate how to both machine sew and hand sew inset seams.)
The ruler is small enough to slip into your bag when you travel but large enough so you can cut up to six inch fabrics at 1/4 inch intervals.
Some people have asked me why I chose the green color for my ruler. The color may seem bright, but we experimented with many different colors, and this one shows up on any light or dark fabric – including prints.
My latest quilt, Florentine, includes 60 degree diamonds you can quickly and accurately cut and mark using my Perfect Cut 60º Diamond Ruler. The pattern is a free download from either RJR Fabrics or our website, and you can choose from two rich colorways. The quilt is made from fabrics from my Milan fabric collection, which is available from your local quilt shop.
I also make two additional sizes of diamond templates for cutting, trimming and marking seam intersections when cutting diamonds from 2 1/4″ or 2 1/2″ strips. They are available separately, as a set of two or in combination with my Perfect Cut 60 Degree Ruler.
To get more tips on using your Perfect Cut 60 Degree Ruler, visit the Tips section of our website.