10
Adjusting the Needle Thread Tension
Straight stitch
balanced tension
The ideal straight stitch has threads locked between two
layers of fabric, as illustrated (magnified to show detail).
If you look at the top and bottom of the seam, notice that
the stitches are evenly balanced.
q
Needle thread (top thread)
w
Bobbin thread (bottom thread)
e
To loosen
r
To tighten
When adjusting the needle thread tension, the higher the
number, the tighter the top thread tension.
Results depend on:
- stiffness and thickness of the fabric
- number of fabric layers
- type of stitch
q
w
e
r
r
q
w
t
e
Tension is too loose
The needle thread shows through on the wrong side of
the fabric, and the stitch feels bumpy. Turn the dial to a
higher number to tighten the needle thread tension.
q
Needle thread (top thread)
w
Bobbin thread (bottom thread)
e
To tighten tension
r
Right side (top side) of fabric
t
Wrong side (bottom side) of fabric
r
q
w
t
e
Tension is too tight
The bobbin thread shows through on the right side of the
fabric, and the stitch feels bumpy. Turn the dial to a lower
number to loosen the needle thread tension.
q
Needle thread (top thread)
w
Bobbin thread (bottom thread)
e
To loosen tension
r
Right side (top side) of fabric
t
Wrong side (bottom side) of fabric
Содержание JW8100
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