Originally Posted by
ckcowl
If you have been basting all of your seams you may need to now go back and restitch them, or the whole thing might come apart. Each machine seems to have different settings for selecting stitch length, but, 10-12 stitches per inch should be about the longest stitch for piecing. When paperpiecing or other piecing that requires pulling on seams or cross cutting 12-16 stitches per inch are more secure, likely to hold up.
CKCowl is right--if you've basically basted the strip sets together they may not hold up to quilting & washing, etc. Besides shortening your stitches, be sure to set the seam by pressing before you open up the fabric to press to one side of seam--helps to set the thread into the fabric.