The crux of the matter would be that you would be starting a small business in your home, which isn't even allowed in many subdivisions. Check your deed restrictions or lease agreement. You'd have to get a license or at least register the business name, and you have to have insurance and probably some help with your taxes and legal issues, and there would probably be some unanticipated overhead, maintenance, etc. If all that doesn't stop you, why not? Maybe you'll eventually own several machines and have a storefront where people can go to use them, take lessons, etc. I'd certainly be interested in being your customer!