Does anyone now of some good resources or even videos that can give me some direction on getting a good surface finish with a ball endmill on various materials? I have a hard time finding info on depth, stopover, speeds and feeds using a ball endmill. It seems like something no one wants to talk about. My main application is mild steel and i can get a decent finish but not really nice.
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You can use this calculator to get close to feed rate, surface finish… It is for turning, but you can basically input to calculate ball nose endmills also. Engineering Calculators - APT (aptmtools.com) Use the turning surface roughness calculator.
check out G-Wizard CNC Speeds and Feeds Calculator for Milling Machines - CNCCookbook: Be A Better CNC'er
I also recommend G-Wizard.