Hello,
I cannot get the feeds & speeds right on my Evolution 4 to save my life.
I'm using a 1/4" 2 flute end mill and using the speeds directed exactly as the Bob's "Speed and Feed Calculator" describes. I've tried two different bits, thinking maybe one was dull (it feels sharp, though). I'm just on a piece of scrap that I believe is pine (chatgpt says the same).
I'm exporting using the BobsCNC mm processor (machine is set to mm). The only thing I could think of is that somehow units are off, but I don't think so. I'm running the code with UGS to the machine. Zero'd on center of piece and using touch plate.
See video:
Have a closer-up pic of when I first started as well.