23
Adjusting the Thread Tension for a Straight
Stitch
• Correct tension
Needle thread (top thread)
Bobbin thread (bottom thread)
To loosen tension
To tighten 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.
When adjusting the 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
- Stichtyp
• Tighten the Thread Tension
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 tension set-
ting number to tighten the thread tension.
• Loosen the Thread Tension
Needle thread (top thread)
Bobbin thread (bottom thread)
To loosen tension
Right side (top side) of fabric
Wrong side (bottom side) of fabric
The bobbin thread shows through on the right side of the fabric,
and the stitch feels bumpy. Turn the dial to a lower tension setting
number to loosen the thread tension.
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