Diagonal Set Triangle Rulers

We offer 4 Diagonal Set Triangle Rulers -- two styles, each in two sizes. Stay on this page for information about the original "Cut-and-Flip" Diagonal Set Triangle Rulers.

The original "Cut-and-Flip" Diagonal Set Triangle Rulers

Marti Michell Video IconUses the same corner concept as our templates. One multi-size ruler offers a no-math solution for cutting both the corner triangles and the larger setting triangles that are needed when patchwork blocks are set on point. Available in four sizes, each ruler is small enough to handle easily and large enough to get the job done right. The small ruler is perfect for small quilts, many border designs and even many square-in-a-square designs.

Scroll down to see how these rulers are used or watch Marti demo using the Cut-and-Flip Diagonal Set Triangle Rulers.

Make your rulers do quilting tricks! Click these links to download a pdf on patchwork tricks and a page on making blocks appear to float on a background. Compare these rulers to the new Full Triangle Diagonal Set Triangle Ruler which we added to the line because many people asked for that style. You might like those better -- maybe you prefer cutting the setting triangles with the cut-and-flip ruler and the corner triangles with the full triangle ruler, or vice versa. Or maybe, like many quilters who love our tools, you need all 4 rulers to cover every need!

triangle settriangle set







Small Diagonal Set Triangle-Ruler
for 3-inch to 9-inch finished blocks
Order this ruler

Product No. 8967


Large Diagonal Set Triangle-Ruler
6-inch to 16-inch finished blocks
Order this ruler

Product No. 8968


Our rulers are marked in 1/2-inch increments by the finished block size. Because corner and setting triangles are often odd measurements, it is easier to use the ruler to measure and cut the strip than to try to find the exact place on a rotary cutting ruler. If this is a new technique for you, download and refer to "The Best Way to Cut." Use the ruler the same way you would use a template and cut strips the required width.

Diagonal set quilts require two different right triangles. Here is an example of a diagonal-set quilt called "Sticks and Stones". (Instructions for this quilt and variations are in Marti's book Quilting for People Who Still Don't Have Time to Quilt.)

triangle set


To cut the corner triangles, align the finished block size with one edge of the strip and the top of the ruler with the other edge. Cut both sides of the triangle without moving the ruler.

triangle set

To cut the larger setting triangles, cut one side of the triangle, then flip the ruler and align the contact spots. The top of the ruler will fit into the already-cut angle and the finished block size line on the ruler will align with the edge of the strip. Cut the second side of the triangle.

triangle set

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NOTE: Prices are subject to change. Most of the instructional information and artwork shown is excerpted from my books. Like other published material, it is protected by copyright law, but you have my permission to print and download these materials for your own non-commercial use.

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