SINGER 1360 Style-O-Matic - Manual (Page 59)

MULTI-SLOTTED BINDER (Confd)
Curved edges require slightly different fabric handling from
straight edges. Inside curves are straightened as they are fed into
binder. If fabric is soft and has a tendency to stretch, reinforce edge
with a single row of stitching before binding.
Outside curves tend to lead away from center slot of scroll and
should be guided so that a full seam width is taken at needle point.
Do not attempt to pull or straighten fabric into full length of scroll.
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