Originally Posted by
Queen
I think you're referring to this one?
http://www.superiorthreads.com/media...ility-list.pdf
Somewhere, I'm not sure where, I would think it's FilTec or Superior, I read that something like 80% of machines take an "L" bobbin, so if I'm ever in doubt, I try one of those first. It's the same diameter as a 15, but it's shorter. My Janome that takes Class 15 bobbins (they have their own special number so they can try to get you to buy their bobbins instead of a regular class 15, just like Pfaff's 9033 is an L bobbin, etc) has no trouble at all with the L prewounds I threw in it.