How to protect the project from being copied by equipment owners?

Question

Project management

There is a project in which it is necessary to order laser cutting and milling on a CNC machine. To increase the speed of preparation of the finished product, I am looking for technical opportunities in my hometown. Often the price is correlated with the amount of work performed. Especially with the lack of competition. But there is no way to buy your own equipment.
Actually, the question is:
How to protect your models / project / ideas from being copied or pulled apart in the portfolio?
Agreement / contract / written agreement?

Answer 1

as practice has shown, fuck it, no one needs it in all sorts of companies with cnc, laser cutting and gigs.