Interesting. My only experience is dealing with fabrication for motorcycle parts. Custom CNC fabricated parts are quite expensive, and hourly rates match that for repair work ($80-120 depending on locality)
Generally these are experienced pro's though, so guessing you gotta start at the bottom and work up.
But that's where I say pity, thought I don't know your friend's circumstances, and certainly if he needs the money now then it's the right choice. But so many just choose the quick, easy money now, and as a result the skilled trades in general are a dying art.