Necci Lock 160, Инструкция

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Pucker or waver-free seams
Wavering
Puckering
Gathering
DIFFERENTIAL FEED APPLICATIONS
Please refer to pages 23, 24 DIFFERENTIAL FEED.
Differential feed is designed to minimize puckering and
wavering.
It is also very effective for gathering.
1. Puckering
Puckering tends to occur on woven or sheer fabrics.
To obtain pucker-free seams, set the differential feed
control dial at less than 1.
2. Wavering
Wavering tends to occur on knitted or stretchable fabrics.
To obtain waver-free seams, set the differential feed
control dial at more than 1.
3. Gathering
Differential feed makes gathering easier on lightweight
fabric. Use it on waistlines, sleeve heads, sleeve bottoms
and ruffles, etc.
Set the differential feed control dial between 1.5 and 2 to
obtain the best gathering effect for your use.
IMPORTANT
The exact adjustment depends on the thickness and
elasticity of fabric. Even the stitch length can influence the
setting. The longer the stitches, the more the fabric is
contracted.
Always do a test run with a piece of actual fabrics you use
and find the best settings.
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