Singer 9100 Instruction Manual page 45

BUTTONHOLE SEWING
0
A-14 A-14 A-16 A-17
A-15 A-18 A-19
A-20 A-21
6
7
6
6 Buttonholes are sewn from the front of the
presser foot to the back, as shown.
7
7 Cut the center of the buttonhole being
careful not to cut any stitches on either side.
Use a pin as a stopper at the bar tack so
you do not cut too much.