How to Use a Simple Folded Corners Ruler for Quilt Blocks
By GE Quilt Designs | Published: 2026-10-27
Category: How-to Guides
Learn to use the Simple Folded Corners Ruler for accurate quilt blocks. No drawing lines, choose from 12 sizes, and perfect corners every time.
Quick Answer
Use the Simple Folded Corners Ruler to mark and fold corners directly on your fabric, eliminating the need to draw lines. Choose the exact size or oversize method, then trim for perfect corners every time.
Why Use a Folded Corners Ruler?
Folded corners add a neat, professional finish to quilt blocks, but traditional methods require drawing diagonal lines on every piece. The Simple Folded Corners Ruler simplifies this by providing a clear, easy-to-read measurement system that works with any pattern calling for folded corners.
The ruler offers twelve different sizes, from 1/2 inch to 6 inches finished, so you can match it to your project's needs. It also supports two methods: exact size (no trimming) or oversize (trimmed down), giving you flexibility depending on your precision preference.
Exact vs. Oversize: Which Should You Choose?
The exact size method is faster because you don't need to trim after sewing, but it requires precise alignment. The oversize method gives you a little extra fabric to play with, which can be forgiving if your seams are slightly off, but you'll need to trim the corners after sewing.
If you're new to folded corners, start with the oversize method to build confidence. As you get more comfortable, switch to the exact size method to save time.
Step-by-Step Guide
- Choose Your Method and Size: Decide whether you want exact size (no trimming) or oversize (trimmed) corners. Refer to your pattern for the finished corner size, then select the corresponding marking on the ruler. Check that the ruler's measurement matches the finished size in your pattern before cutting.
- Position the Ruler on the Fabric: Place the ruler on the corner of your fabric piece where the fold will be. Align the ruler's edge with the fabric edges, ensuring the size marking is at the corner point. Double-check alignment to avoid inaccurate folds.
- Mark the Fold Line (Optional): If you prefer a visual guide, use a fabric marker to draw a line along the ruler's edge. However, the ruler is designed so you can fold directly without marking, saving time. For exact size method, you can skip marking if you're confident; otherwise, a light mark helps.
- Fold and Press: Fold the fabric along the marked line (or the ruler's edge if you didn't mark), right sides together, and press firmly. The fold should align perfectly with the ruler's measurement. Press with a dry iron to avoid stretching the fabric.
- Sew and Trim (If Needed): Sew along the fold as your pattern instructs. If you used the oversize method, trim the excess fabric after sewing to achieve the exact finished size. For the exact method, no trimming is required. Use a rotary cutter and mat for accurate trimming; check that the finished corner matches the pattern size.
Product Fact
- Simple Folded Corners Ruler AQDR 1: The Simple Folded Corners Ruler AQDR 1 works with any pattern calling for folded corners and includes twelve sizes from 1/2" to 6" finished. You won't need multiple rulers or templates—this one tool covers a wide range of block sizes, making it a versatile addition to your quilting kit.
Simple Folded Corners Ruler AQDR 1
