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Balancing Needle Thread Tension
The needle thread and the bobbin thread should
interlock in the center of two layers of the fabric in
straight seams.
q Match the desired of the thread tension number with
the setting mark.
Set the desired number of the thread tension dial at
the setting mark.
w Loosen the needle thread tension by turning the dial
to a lower number.
e Tighten the needle thread tension by turning the dial
to a higher number.
Thread Tension for Zigzag Sewing
To obtain better zigzag stitches, the upper tension
should be slightly weaker than in the case of straight
sewing.
The upper thread should appear slightly on the reverse
side of the fabric.
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