Cambam / milling Alu

[JAZZCNC]

Don't plunge into Ali it knocks hell out the machine and cutter.!!

That feed rate is a bit slow for 4mm SF try 800mm/min has a starting point. Not sure what feed plunge +30 means.? But in any case plunging into Ali is a bad idea and far better to either spiral or ramp down to depth before cutting. I spiral down slow around 300-400mm/min in Alu.

Here's 2 bits of code to try using a spiral entry both same except ones conventional milling and the other Climb milling so you can see difference.!
cutting 50mm Dia circle, 3mm deep, 1mm Doc, 4mm S-flute cutter, 15000rpm, 800mm/min, 400mm/min spiral down. Z zero top of material.

Edit: Rapid height =10mm