[rotorwrench]

Flatrod has a good point. Knee mills are good for a lot of different milling jobs but the table can be a problem if things aren't in a good tight condition with it. Most machines that are designed to deck things with accuracy have full support underneath to make certain there can be no deflection under cutting load. A regular knee mill would be fine for small stuff like motorcycle heads but may not have the support it needs for the longer stuff.

If it works for you then that's great. A good surface cut should be very smooth. If a person has what I refer to as a grave stone or surface plate, it's easy to check the job. Lapping machines are another way but those things can get expensive. They can get the surface better than a gnat's ahrs by far.