8520 owners: Face Mills and Carbide E/M's?

[wa5cab]

I'm necroposting my own thread. I haven't got a face mill yet for my small mill. I'm eyeballing this 2" face cutter using 45º SEAN-42 AFTN inserts on Ebay. Is it possible to use only 1 insert in a 4-insert face cutter or would it be unbalanced?

Short answers are "Yes" and "Yes". That would be equivalent to a fly cutter. To get approximately the same surface finish you would have to reduce the feed rate by a factor of four