I would say skip the bridgeport and go straight for a small used CNC.
By the time you buy boring heads and all the tooling to make a conventional bridgeport worthy enough to produce the specialty parts that may break, you could justify a CNC.
Additionally the part programs can be saved, for future runs or improvement modifications. Go with a CNC mill, you can usually start off with a conventional lathe and make a judgment call on that issue later. |