I'm working on a raw edge applique now. I'm FMQing the edges of each piece with polyester monofilament to the muslin backing. I also plan on doing a fair amount of FMQ "thread paint" when I quilt it. I tried to make my monofilament stitches as close to the edge as possible.
I know some of the edges are going to fray slightly.
What I don't know is the intended use of the quilt (wall hanging or "used" lap throw) because it's a gift, so I can't ask :) I will however tell the recipient that some of the edges might fray, but should not "come apart" and if that look is Ok with her then by all means use it and wash on gentle cycle when needed - preferably in a front loader.
here's a pic of the work in process - auditioning borders
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And a closeup of the center section. You can just see the monofilament in some of the blues and beigh's
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