I have a New Home and have used it ALOT for the past 20 years. I traded in a Singer (all plactic parts) for the New Home. At that time all of the gears and inner working parts were metal. I have not had to replace anything (knocking on wood) just having it cleaned once a year or so. I love it!! I also have a Baby Lock embroidery machine and I love that too. I wouldn't trade my New Home for anything.