GETTING READY TO SEW –
31
Pucker or waver-free seams
Puckering
Wavering
Gathering
Differential feed applications
Please refer to pages 23-24, Differential feed.
Differential feed is designed to minimize puckering and wa-
vering. 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 ob
-
tain the best gathering effect for your use.
It can also be helpful to increase tension on the needle
thread(s) and lengthen the stitch length setting.
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.
