I've been told that metal bobbins in metal cases (shuttles?) and plastic in plastic bobbin cases...and heard you should never use metal in the plastic cases. I have both types of cases and both types of bobbins, and the bobbins are almost all interchangeable---so I'd like to know for sure, if anyone has indisputable information. It would be soooo convenient to grab the thread color I need w/o considering first if it's metal or plastic bobbin. Thanks for any input.
Last edited by mermaid; 10-24-2012 at 04:57 PM.
Reason: error