Singer 14T968DC - If the Fabric Is Not Laying Flat

 Fold sweatshirt fabric wrong sides together,
lengthwise.
 Align the fabric so that the fabric’s fold is not
being trimmed by the knife.
 Sew.
 Gently pull the fabric flat and press.
Hint:
If the fabric is not laying flat, align
the fabric farther to the left of the
knife.
Three-Thread Flatlock (wide) page 6