I am looking to buy a couple small cnc machines to make some small aluminum parts. I have a very limited budget, so I have been trying to find a used mini lathe, and mini mill. I haven't had much luck yet, and was wondering if someone here could send me in the right direction. I don't know a whole lot about electronics, so I haven't really persued CNC retrofits. Are there some good sites to find used CNC mini or hobby equipment?