1mm end mill depth of cut in aluminium.

[Nealieboyee]

You said it all when mentioning the grade. Nobody can tell you what to use without knowing the grade and even then with small cutters, the machine stiffness becomes a large factor.

Unfortunately, it's going to be trial and error. If your machine is stiff enough and the spindle is ok on the runout plus spins fast enough then I can't see why 0.3mm shouldn't be possible with good cooling.

Thanks Jazz. Yeah was hoping someone would confirm what I thought. I'm running the spindle at 24000rpm with a more precise collet because of the smaller end mill. Flute length could be shorter but I'm working with what I have. Flooding it with paraffin ��

[JAZZCNC]

Thanks Jazz. Yeah was hoping someone would confirm what I thought. I'm running the spindle at 24000rpm with a more precise collet because of the smaller end mill. Flute length could be shorter but I'm working with what I have. Flooding it with paraffin ��

Ye, sometimes you just got to be patient and accept it's a slow job. Or you go for it and risk a cutter or two. Me personally if it's just a one-off job then I'd air on the side of caution so don't break cutter but if it's a job I'm going to do regularly then I'd sacrifice a few cutters to find the optimum cutting parameters. It's pays back long term.