Dumb question, but how much are we talking here? What’s the ballpark range of such a machine? $50,000, $100,000, $150,000? Maybe a home equity loan, or Heloc may be an idea for a down payment. Normally I’m not a big fan of tying a large venture to my home, but using that as a down payment may make the bank feel better about loaning you the balance, as you now have some skin in the game. If this thing is $200,000 or more... that may be just too much to pay off with specialty/niche projects in the first place. Maybe you outsource the actual cutting of the parts to a manufacturer that’s already doing this type of work, and save yourself that investment and gamble until you start getting returns on it, to determine it’s a viable business. What you save in a “business loan payment” you use to pay for the manufacturing of it, and have no risk. I kinda like that option anyway as you can try it, and not be locked in to it if it doesn’t take off.