Adding onto feeds and speeds vs. noise, what it sounds like when feeds and speeds are “right” vs. when they’re “wrong” in various ways (e.g. chatter, load spikes, just cutting too hard). As a newcomer to milling, basically all the sounds are scary, it’d be great to know which ones are worth worrying about and which aren’t, as well as what I can do about which sounds.
On a similar note, how to evaluate the results of different feeds and speeds, e.g. what should I look for on my workpiece after a roughing pass or a finishing pass? What’s the best I can expect to get out of the machine if I do everything right?
Also, +1 for axial vs. radial DOC. I found it really weird that all this work goes into making a tool with say 0.5" of perfectly sharp flutes and all the official resources say to use nothing but the first 0.01" of the tool, I’d love to learn more about how to improve on that.