I have 2 Elnas, 4 old Singers, 1 Huskvarna(sp), 1 Morse, 1 Kenmore, 1 Montgomery Wards. I think that's all. LOL I have NO idea if the Singers work. The others do but I don't use them. One of these days. LOL I also have a Baby lok serger that works fine, and is in retirement now that I do more quilting than clothes sewing.