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Adjusting the Needle Thread Tension for a
Zigzag Stitch
For an ideal zigzag stitch, the bobbin thread does not
show on the right side (top side) of the fabric, and the
needle thread shows slightly on the wrong side (bottom
side) of the fabric.
See the illustrations for the correct appearance.
To match this appearance, adjust the needle tension as
necessary.
• Correct tension
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Right side (top side) of fabric
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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
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Right side (top side) of fabric
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Wrong side (bottom side) of fabric
The corner of each zigzag pulls together on the right
side of the fabric
• Tension is too loose
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Right side (top side) of fabric
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Wrong side (bottom side) of fabric
The corner of each zigzag point pulls together on the
wrong side of the fabric.
