While in Florida my friend fell for this ad because then she could leave one there. Had talked to me on phone describing this --serger part and how to use-- the demonstrator said was shown on the included dvd. Did research.
It was not and was nothing but a complicated foot but did cut fabric.
She brought north to Ontario for me to check. Saw another part --white with red Singer word on the top that goes on like a walking foot that will apparently cut fabric. Haven't actually seen it work as the lady that bought that machine never had time to try it due to sickness. My friend wants to buy that part as she expects to use it as serger . I know it won't be the same but she is not complaining about sewing machine anyway.