Hi,

Forwarning, I am not a machinist.

I need to mill very small parts in some 3mm thick alu, brass and copper with a 2mm single flute endmill. I have no idea what my feeds and speeds need to be. I am using Fusion 360 for my CAM and I have tried using different CNC speeds and feeds wizards with very poor results and constant tool breakage.

It's very hard to describe exactly what I need help with so I have provided some picture to help illustrate my point.

My cnc machine is a custom 500kg+ epoxy granite mill with a 24k 7kw single.

radius of the cut is 1.9mm

https://imgur.com/nCtqbFM
https://imgur.com/lmDIVGp
https://imgur.com/3OvSWKN