27
Adjusting the Needle Thread Tension for a
Zigzag Stitch
In an ideal zigzag stitch, the bobbin thread does not show on
the right side (top) of the fabric, and the needle thread shows
slightly on the wrong side (bottom) of the fabric.
See the illustrations for the correct appearance.
To match this appearance, adjust the needle tension as.
•
Correct tension
Right side (top side) of fabric
Wrong side (bottom side) of fabric
Minimize the amount of needle thread visible on the wrong side
(bottom side) of the fabric without causing excessive puckering,
or causing the bobbin thread to show on the right side (top side)
of the fabric.
Results vary with fabric, thread and sewing conditions.
•
Tension is too tight
Right side (top side) of fabric
Wrong side (bottom side) of fabric
The corner of each zigzag pulls together on the right side of the
fabric
•
Tension is too loose
Right side (top side) of fabric
Wrong side (bottom side) of fabric
The corner of each zigzag point pulls together on the wrong side
of the fabric.
•
Tension is too loose
Needle thread (top thread)
Bobbin thread (bottom thread)
To tighten tension
Right side (top side) of fabric
Wrong side (bottom side) of fabric
The needle thread shows through on the wrong side of the
fabric, and the stitch feels bumpy. Turn the dial to a higher ten-
sion setting number to tighten the thread tension.
