by plrlegal on Wed May 06, 2009 10:45 pm
I actually would use a 3-3.5 mm stitch (8-10 stitches per inch on my Pfaff 4.0) and a silk wrapped polyester thread. Taffeta is one of the fabrics that if you use small stitches on it, it will tend to pucker, especially with polyester thread that has been tightly wound at high speed onto a bobbin. Polyester thread is one of the threads when tightly wound a high speed onto a bobbin will stretch and then when it is sewn into a seam will shrink back to its original length, thus causing the puckering in garment seams. If it is at all possible, you should wound polyester onto a bobbin at a lower speed to prevent stretching.
Patsy
"Quilting Is My Therapy...I've Been Preshrunk"