Hi All,
I have successfully cut 3/8" polycarbonate for a project. Now I am trying to refine the tool path to make the run time shorter.

I have a 1/4" "O" single flute bit that works beyond any expectation. I was taught to set the cut depth to 1/32" and the speed is 18K ; I forget the IPS feed rate but it worked.

The project is basically a 3.5" donut with a 1" center hole. I use four tabs set 90 degrees apart. The tab size is 0.125" and 2D in profile. I was taught to use ramp in cuts.

Does anyone have suggestions on how to speed up the total job time? I was thinking that my cut depth per pas could be increased to 0.0625 or even 0.125" with the same speed and feed rates. Would a 3D tab be a faster profile? Would going to a 3 tab arrangement still provide part stabilization?

Thoughts?

thanks,
Clint