Although your regular ruler likely includes a clear 60-degree marking, you can also use a specific 60-degree ruler. You can use these tools with a truncated top since it helps to reduce bulk in the kaleidoscope centers. Using a specific ruler makes cutting triangles for your one-block wonder a breeze! If you prefer using a special 60-degree ruler, I recommend the one from Creative Grids. It is a specialized ruler that works well to cut equilateral triangles. With this ruler, you can cut 30 or 60-degree angles up to an 8-inch finished height. This 60-degree equilateral triangle has legible black and white markings. A 1/4 inch dashed line on each central vertical line’s side allows you to cut 30-degree triangles that incorporate the seam allowance. Until you apply pressure, the ruler will glide effortlessly over your fabric. Then, when cutting, the proprietary gripper holds the material in place, minimizing sliding and miss-cuts! The ruler includes fully illustrated step-by-step instructions, or you can scan the QR Code printed on the ruler to see a video demonstration of these functions. To start cutting triangles for your one-block wonder quilt, you will first fold the top of the strip, then align the bottom of your fabric strip with the 6-inch line on your ruler. Take note that your ruler’s point has a blunted top. When sewing your triangles together, this feature will help you line them up correctly. Make sure you also line up the fabric’s edge with it. Additionally, you must be careful not to get too close to the cloth selvage. After avoiding the hem, you will trim the ruler on both sides. As you cut, be careful not to move the ruler. For the next strip, you will flip your ruler over and realign. Then, trim the following edge and continue moving down the fabric strip.