I have come across a electronics recyle company that would not mind if I buy parts off them to make my CNC machine. My question is, What coppiers make/models are recomended to obtain beefy 3 degree or more precision steppers and controlers off from?

Once I complete the 3 axis stepper table Are parts milled to a smooth finish when completed or do thay need to be sanded if thay are to be used as moulds?