My friend Sheila asked me to enlarge a quilt of hers. She said the quilt was plenty long for her bed: it hung off the foot of the bed and she had enough quilt at the head to fold it back and over the pillows.
But the quilt was only wide enough to cover the mattress. The moment somebody got under the quilt, it would draw up along the sides. This is what the quilt looked like on my king-size bed (the gray you see is the sheet beneath).
Here’s how I solved her problem:
First, I cut two lengths of pre-quilted fabric as long as the quilt.
Next, I positioned the pre-quilted fabric under the quilt, cut edge even with the binding. I stitched through all layers, along the inner edge of the binding. I trimmed the pre-quilted seam allowance.
I opened out the pre-quilted fabric and stitched through all layers along the outer edge of the binding, enclosing the trimmed seam allowance.
Finally, I bound the three raw edges of the pre-quilted extensions.
The entire project took about six hours.
Here’s what the expanded quilt looks like on my bed.