Hi Bush Flyer

I am new here, but I went through the posts. Would you please tell me why you are using a single flute cutter for aluminium?
I have been working aluminium for years, but mostly with 3 flute cutters. You can plunge, slot and side milling with no problems.
Depends of the tool I am running the cutters around 8000 - 10000rpm.
For me is interesting why single flute, why not 2 or 3 flutes?