I had gotten a new machine and loved sewing with it (embroidery machine). So my reliable Singer sat for 8 years. When I went to sew on it, it sounded like a disel truck. When I took it in to have it serviced I was told that machines have to be used. You cannot let one sit. Just like a car in storage, start it up, sew a little. Makes sense. After that and now reading what has been written, I am sure I will be more deligent in my cleaning. I do use the vacuum attachments and love those, they work fantastic. Have had them for years and years.