I, too, find the finish on the casting lacking. I debated posting any comment due to the strong sentiment voiced by some that mentioning it is 'unreasonable'. But I decided to chime in because it reminded me of a quote by George Bernard Shaw:
"The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends on the unreasonable man."
WE, the unreasonable few, think that the casting should and could be made to look better without having any impact on the cost of an already expensive saw. Most likely no one has figured out a way to do it - yet - but if no one is trying, it will never happen. If enough people voice their displeasure, someone may come up with a way to solve the problem. Perhaps it will take a new process, a new material, or a new casting vendor? In any case, dissatisfaction with the 'way things are' remains the primary way in which progress is made.
I am proud to be 'unreasonable' in this instance.