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Balancing Needle Thread Tension
The thread tension should be adjusted depending on the
sewing materials, layers of fabric and sewing method.
To adjust the thread tension, turn the tension dial.
q Tension dial
w Setting mark
Balanced tension:
The ideal straight stitch has threads locked between two
layers of fabric, as illustrated.
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.
e Needle thread (Top thread)
r Bobbin thread (Bottom thread)
t Right side (Top side) of fabric
y Wrong side (Bottom side) of fabric
Needle thread tension is too tight:
The bobbin thread (bottom thread) will appear on the
right side (top side) of the fabric.
Loosen the needle thread tension by moving the dial to a
lower number.
Needle thread tension is too loose:
The needle thread (top thread) will form loops on the
wrong side (bottom side) of the fabric.
Tighten the needle thread tension by moving the dial to a
higher number.
q
e
r
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