Hello,

I'm not sure if the PM-728VT ultra precision bench mill bought with the ultra precision CNC kit is able to use 0.2mm (~8 thou) flute Flat Square End Mill spiral bits.
Example:
https://www.amazon.com/Cutting-Tungs...06W9NDFPQ?th=1

My objective is to make custom CPU/Chip Die water cooled cold block plates, which requires micro fins to extract heat efficiently. I'll be using copper blocks since it has excellent properties of the highest thermal conductivity of any engineering metal.

Generally the micro fins have a gap channel which are milled of a width of 300 microns (~100 thou), and the standing remaining fins/walls are about 100 microns thick (~4 thou).
The PM-728VT is an ultra precision bench mill, it should hold 2 thou all day and I believe it is more than capable of coordinating at this mechanical accuracy and repeatability.

Question is what type of spindle do I need to make this work?
Another question is can I use stepper motors with closed loop to do this, it should provide enough resolution and keep track for the task?

To further clarify what I'm trying to machine, I have attached some photos.

Thanks.