I belong to the Singer attachment yahoo group though mainly I just read. I'm no expert so there's not much useful I can contribute. We also have a couple resident experts who have written pages of useful info on attachments including their uses and how to identify them here.
I think it would be great to get all the information (or at least links to the various threads) in one thread. The trouble is too many stickies clutters up the board and make it harder to get to the current topics. It's always a decision that admin and the moderators have to weigh carefully.
I'm kind of surprised there hasn't been more response to this subject yet.
Rodney