PERFECT STITCHING
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INCORRECT STITCH
(A)
INCORRECT STITCH
(B)
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Tension of upper and lower threads should
be equal, just sufficiently strong to lock
both threads in material.
Perfect stitching appears flat with no
puckering of
rnater~al.
The upper thread lies on the surface of
the material by pulling the lower thread
up as shown.
This is caused by tight tension on the upper
thread or loose tension on the lower thread.
To correct this, turn the upper thread
tension dial to a lower number.
When perfect stitch cannot be obtained by
only upper thread
tenslon dial, adjust the
bobbin tension accordingly.
The lower thread
l~es on the under surface
of the
mater~al by pull~ng upper thread
down as shown.
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This is caused by loose tension on the upper
changing upper thread tension, adjust the
bobbin tension.
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NOTE: It is recommended that test samples be made before starting to sew.
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