Do you know your potential customers, what they need made, quantities and how much they'll spend? I think trying this without either working in a shop or being a rep for a shop, is likely a disaster waiting to happen. Definitely avoid debt and avoid partners like the plague. I know you didn't mention that, but just wanted to get it out there. Most people start out in a very small and limited fashion. Then they grow or not. BTW, along with the machines, have you considered inspection equipment? It ain't cheap and you can't do business without it. Might need insurance too. Priced that stuff?