I'm at around £120 profit per day averaged over a month with an 8x4ft router after expenses.

Took me around 3 years to get to this point on minimal self invested budget only required me to possess a multplitude of knowledge in buisness, sales, web design or more importantly SEO and not forgetting engineering. Think I'd likely gone under very quickly if I didn't possess just one of these skills.

Revenue for me will increase in time with more machines and employing extra hands, but all in good time. Heard of a fair few guys bite off more than they can chew when it comes to the unforgiving buisness of cnc and go under in matter of weeks. Throwing money at a new buisness is risky. Best tip I have is setup the buisness and advertise a year or more prior to machinery and premises, to improve web presence. Websites barely get sniffed at in the first year so not worth having an expensive machine doing next to nothing for a year or so if you can avoid it.