Singer BRF40 Instruction Manual page 55

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GB Multi-stitch zig-zag
Sewing on lace and elastic, darning, mending, reinforcing
edges.
Set the stitch pattern dial to "
Place patch in position. The stitch length can be shortened to
produce very close stitches. (1)
When mending tears, it is advisable to use a piece of backing
fabric to reinforce. The stitch density can be varied by adjusting
the stitch length. First sew over the center and then overlap on
both sides. Depending on the type of fabric and damage, sew
between 3 and 5 rows. (2)
Bar tack
Set the stitch pattern dial to "
Set the stitch length dial to "1" - "1.5".
This function is used to secure the tops of kick pleats, as well as
pocket openings. First use a straight stitch across the top of the
pocket or pleat. This seam should be approximately 1/4 to 1/2
of an inch long. Set stitch to zigzag and stitch over the straight
stitch backstitch at the beginning and end of stitch to secure
ends.
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".
" or " ".