Singer Quantum Decor User Manual page 9

Before removing the button and fabric from the machine, set machine
to straight stitch. Leave width at current setting and stitch in place for
three stitches. This forms a tie-off on the back side to secure the button.
Apply a liquid fray-preventer on the backside of fabric on the knots.
Trim threads after they dry, being careful not to cut thread knots.
Note: Note: Note: Note: Remember to raise the feed dogs when finished.
For a thread shank, place a needle or toothpick on the button and stitch.
Use decorative buttons to tie-off a quilt or wall hanging!
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