You have a reason to restore it, that's good. Most of us don't have access to a metal work shop, and then we mostly rely on the replacement parts we can find. I know a few who has refinished nickle and chrome parts on old 3 speed bikes and veteran cars, but so far I have not heard of any equivalent regarding sewing machines. A few here on QB has made parts to restore old industrials and intersting domestic models, so it's not unheard of. I have been very impressed with some of the new wooden bases I have seen on the Victorian Sweatshop forum. There are advice and help to be found if you should need it.
Best of luck with the project.