Doug Leko's Simple Folded Corners Ruler

The Simple Folded Corners Ruler by Doug Leko is a versatile acrylic quilting tool that simplifies the process of adding folded corners to your patchwork projects. Suitable for fabrics up to 8″ square, it lets you choose between exact size trimming (no trimming after sewing) or oversized trimming (sew, then trim down for perfect accuracy).

This ruler is ideal for creating snowball corners, flying geese, square-in-a-square blocks, and other units that require corner triangles. Its clear markings, diagonal lines, and multiple size guides help you achieve precise results every time—without the need to draw pencil lines.

Made in the USA by Antler Quilt Designs, this tool comes with step-by-step, illustrated instructions for both left- and right-handed quilters.

Features & Benefits

• Size range: Works with base fabrics from ½″ to 8″

• Two methods: Exact size (no trimming needed) or oversize then trim for precision

• No marking required: Speeds up piecing and reduces errors

• Clear acrylic: Durable, with easy-to-read black markings

• Diagonal and size lines: Ensure accurate alignment and cutting

• Versatile uses: Ideal for snowball corners, flying geese, square-in-a-square, and other corner triangle units

• Instruction sheet included: Left- and right-hand trimming methods explained