Binding Formula:
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Quilt binding is the fabric strip that covers the raw edges of a quilt, providing both a finished look and durability. Calculating the correct length ensures you have enough fabric to go around the entire perimeter with some extra for joining and finishing.
The calculator uses the binding equation:
Where:
Explanation: The equation calculates the perimeter of the quilt (times 2 for double-fold binding) and adds 10 inches for joining the ends and finishing.
Details: Proper binding length ensures you have enough fabric to complete your quilt without awkward joins or running short. Too much excess leads to waste, while too little can ruin the finished look.
Tips: Measure your quilt's length and width in inches before sewing the binding. Add extra if your quilt has special corners or design elements that require more binding.
Q1: Why add 10 inches to the calculation?
A: The extra 10 inches accounts for the diagonal join of binding ends and provides a safety margin for finishing.
Q2: What width should I cut my binding strips?
A: Typically 2.5 inches for double-fold binding, but this can vary based on your desired finished look.
Q3: How do I join binding strips?
A: Strips are joined diagonally (bias join) to reduce bulk. The calculator includes extra length for this purpose.
Q4: Does this work for irregular shaped quilts?
A: For irregular shapes, measure the entire perimeter and add 10 inches to that total measurement.
Q5: Can I use this for single-fold binding?
A: Yes, but you might reduce the extra length to 5 inches since single-fold requires less fabric.