Greetings. I need to finish 3" x 3" pieces of 4140 steel, about 40 Rc. They need to end up mirror like and flat. What's the best way to start on a mill?
I tried a 5-cutter indexed surface cutter, not good, probably due to some slight chatter. Then I tried a single point fly cutter that was better but still not very smooth.
So what's the best way to prepare the plates for polishing? Thanx.
I tried a 5-cutter indexed surface cutter, not good, probably due to some slight chatter. Then I tried a single point fly cutter that was better but still not very smooth.
So what's the best way to prepare the plates for polishing? Thanx.