I used to use this all the time and it works great. It is called a ''ruffler' but it gathers material in really nice little tucks. We used to wear gathered skirts and this thing worked wonderfully. It even has a little place on it to adjust the size of the gathers, make them really small or larger. Great for little girls clothing. Try it on something and you will see.

Sorry, double post.

I thought a ruffler, too...

And it is made out of metal. -- J

It is used to make ruffles. I have one for my new machine and the design has not changed much over the years.

Ruffler attachment! That's an amazing tool! Now I'll know what to look for if I ever need one!

Thanks for all the info and the video links. I knew what it was but not how to use it.

Thata a gatherer. and hemmer

Looks like a ruffler attachment to me.

Looks to me as if it may be a ruffle-maker foot from an old machine... but ?????? I am curious too.