Im trying to cut a 2in bar of aluminum in the VMC.
I am rounding the corners w/ a 3/4in dia, 3in cutting length endmill
I am getting chatter w/ any feedrate faster than 5ipm
Spindle is 1000rpm

Can I use a 3/4in dia but with a 3/4in cutting lenght for better rigidity and cut the bar using multipasses? Or will the sides of the endmill rub when I cut passed the 3/4in mark?

-Park