Brother PC-420 Operation Manual page 90

UTILITY STITCHES ——————————————————————————————————————————————————
■ Attaching a shank to a button
To sew the button with a shank, attach the button
with space between it and the fabric, and then
wind the thread by hand. This attaches the button
securely.
Place the button into button-sewing foot "M",
1
and then pull the shank lever toward you.
1 Shank lever
2 After sewing is finished, cut the upper thread
with plenty of excess, wind it around the
thread between the button and the fabric, and
then tie it to the upper thread at the beginning
of the stitching.
Tie together the ends of the bobbin thread at
the end and at the beginning of the stitching at
the wrong side of the fabric.
3 Cut off any excess thread.
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