I swear i used something like that when I first learned to sew and loved it. I can't remember the machine specifics, it may have been in home ec class.

I believe it will fit a featherweight. I haven't tried it on mine but it has a screwhole for another attachment so I think it will work.

I would imagine that is what the hole is in the bed of my machine is for. Where did you find that attachment. It would be a huge help to me.