I want to open a small machining factory … how much is it? And what equipment you need to buy. Can you make money? What if there is no order?

I am a mechanical major, and I had an idea before. It is estimated that a small processing factory needs hundreds of thousands, recycling some processing equipment eliminated by large factories to reduce costs and recruiting several apprentices. At first, there won't be many orders, and it will take at least half a year to see some benefits, so we should consider them comprehensively. ...