You’ve spent extra time squaring the blocks and sewing with a consistent 1/4″ seam, yet the quilt top still ends up with wavy borders. What is the problem?
By applying the technique in this post, your quilts will have straight sides and be square with no wavy borders.
To achieve a nice square or rectangular top, opposite borders must be the same length. Often quilters simply measure each side, cut the corresponding length and sew it onto the quilt top assuming that opposite sides are the same length. Usually opposite sides are not the same length which results in an out out-of-square top. Why does this happen when you have taken so much care in squaring up the rest of the top? Any time you cut the fabric, the cut edge is vulnerable to stretching out of shape, especially if it is a bias edge. Around the outside of the top, all yo have are cut edges making the top vulnerable to slight stretching. It is important, therefore, to apply the following technique to arrive at the correct dimension for border lengths.
- Measure the length of the quilt top in three places; through the center, and about six inches from each side of the quilt top. Average there three measurements. Cut two strips for the side borders using the same average of the measurements. If the border is a little longer or shorter, ease (distribute) the fullness evenly. Sew the side borders on, press the seam toward the border. Both sides are now the same length.
- Measure across the quilt, including the side borders, in three places; through the center and about twelve inches from the top and bottom edge. Average the three measurements. Cut two strips of border the same length using this average measurement. Again, if the border is a little longer or a little shorter, ease the fullness evenly the length of the border strip. Sew and press the seam toward the border. The top and bottom of the quilt are now both the same length.
If you need border strips longer than the the width of the fabric you are cutting, sew two or more strips together with a diagonal seam. Trim, extra away and press the seam in one direction. Then cut the length needed for the border. Although the diagonal seam uses more fabric, I always use a diagonal seam because it seems to be less noticeable on all types of fabric.
By sewing borders on opposite sides that are the same length, easing any fullness, the top will have the same length dimension on both sides and the same width dimension on both top and bottom. The quilt top will be exactly or pretty close to exactly “square.”
If you are not already using this technique, I hope that you will give it a try. I am positive that you will be very happy with the results.






