Little Genie Magic Bobbin Washers
 

I see these in Nancy's Notions catalog. Has anyone used these? Did they keep the "backlash and bird's nest" from happening on the underside of your project? Do they fit all machines? Do you think they are beneficial?
Thanks for your help!

I have them. They come in a pack with several "washers" but very little info. I was wondering if they sent you several in case you have several machines or if they "wear out." I am using one in my Babylock Quilter's Choice and the machine seems to moving better but I also recently changed to a higher quality thread. I don't know which is making my machine run better. They are relatively inexpensive...

Great question, I have wondered the same thing!

I tried them in my Viking Sapphire and didn't notice a difference. On this machine the bobbin has curved sides, not flat like most bobbins. Maybe it just didn't have enough contact to make a difference.

I use them in all my machines and love them! My stitches look much better, especially FMQ.

I use them. It prevents static in the metal bobbin case. One will last a very long time if you don't drop it and can't find it.

I tried them in my janome 6600 and noticed no difference.

Won't fit in my drop down bobbin but I should try it in the 15-91.

I don't think you are suppose to notice a difference. It's a precaution.