Originally Posted by grannysewer
It also has a spring on the thread spool and the 1940 FW doesn't. It it necessary for the thread to spool correctly? Just wondering.
No, it doesn't need one but the spool won't make that cute little 'clickety-clack' sound with the spring on it :-D . Mine doesn't have one, either, but I have another one that I
could put on but I'm trying to decide if I would rather hear the 'clickety-clack' while I am sewing.