Hi There


I have a cnc machine but very little experience.

I want to cut 3mm alumiuim with a pattern on the surface (non slippy pattern )
I tried 6mm end mill tool
I set the speed to 6000

The tool snapped after a few minutes

Can someone please advise me what is best bit to use ?
What speed shall I set the machine
Do I need to oil bit during the cut ?

Many thanks in advance

Nissim