Settings:
Feed rate: 300mm/minute
RPM: 30,000 RPM
Plunge rate: 60mm/minute
Depth of cut: .2mm
Lubrication: I used some WD40 at first, but it just seemed to make the aluminum flakes bunch up around the bit, so I stopped. I did run the ShopVac constantly.
Bit: Niagara Cutter N61442 Carbide Square Nose End Mill, Inch, TiCN Finish, Finishing Cut, 45 Degree Helix, 2 Flutes, 1.5" Overall Length, 0.125" Cutting Diameter, 0.125" Shank Diameter
I had to do a second pass where I went from -6.3 to -6.55.
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