Right now we are using a standard TPG insert 3" body with 5 inserts. I do a lot of full sheet nesting on a Gantry Router and am trying to find a faster way to mill down large areas in thickness. We are currently doing a 75% step over at 5000rpm and a 0.100" step down. Does anyone have any better ideas? The spindle is a 15hp 10,000 rpm spindle.