[jaru-eri]

What will be the right spindle speed and feeding rate for a 3mm 4 flute end mill? And which pass depth should I use for cutting in aluminum?

[ArtHeatSign]

Hi there,

Based on my experience with aluminum cutting, I'd suggest you use these values.

For 3mm 4 flute end mill
Spindle speed: 8000rpm
Feeding rate: 15 mm per second

Try using a pass depth of 0.508mm

Let me know how this works for you.

Thanks.