So I want to start a small 3D printing business, first of all because I enjoy 3D printing and second of all because I feel like there's potential for business here. I also know some 3D + my wife is an artist/designer who is helping me with that aspect of it all.

I'm about to buy a new printer but I'm trying to figure out how to turn this into a business because it's probably much difficult than I am antecipating.
Does anyone have recommendations or advise? Is this even a good idea?