Machining Feeds & Speeds |Test Maritool Hard Milling End Mill

I tested the Maritool brand of hard milling end mills. I think they are re-branded from HTC. This 1/2" EM cut AR 450 plate nicely, but vibration kills em instantly.
There are so many interdependant variables for optimizing feeds and speeds that you really only have one option to get it right: trial and error. The formulas, spreadsheets and software only
narrow the spread.

Edge Precision Channel https://youtu.be/LXcYEWC9sA4