Originally Posted by paulswalia
Originally Posted by mathteacher
I wonder if your edges don't match because of the natural push of the presser foot on the top fabric. If you pin at small intervals, that should help.
That's what I was wondering. If you have one piece a little bigger than another, always put the bigger one on the bottom and the feed dogs help you to ease them together. So maybe this is because you have too much pressure on the presser foot and it's pushing the top through faster than the bottom.
Thanks for understanding it is Seam length.
All squares are exactly 8". With the Accufeed it has feed top and bottom and I still get the difference. The /38" seam is with the fabris on the right edge of the presser foot and the needle set as far right as it will go.
Fixed the sewm width by sticking a 1/8 " stack of post its as a guide.