Acufeed vs dual feed

Joyce VanAtta

I have had my 15000 for a year and am still learning a lot.
Something that still puzzles me is the acufeed and dual feel.
Apparently the acufeed is the same as the walking foot.  Correct??
The dual feed is similar, so when is the best time to use it?

I look forward to hearing your answers.
Thanks, Joyce

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