[QUOTE=mac;7616693]ManiacQuilter2, I also use a can of air to clean by bobbin area sometimes. What did the can of air do that made you have to replace the bobbin case? I am interested as I don't want to wreck my 1530 either.
What I have heard is canned air has moisture in it and can damage the inside of the sewing machine. Others say no they have used it for ever with no problems. I don't want to take a chance. The manufacturer of the machine might make a difference.