Hi everyone,

My machine is a 3-axis cnc milling machine with a Fanuc O-MD control, 2001 year. When milling a free form concave surface on a UHMWPE polymer block, the surface finish is not good. it produces a "faceted" finish, showing segments, please see attached images.

The feedrate: 1500 mm/min, and the spindle speed: 5000 rpm.

I tried different software and hardware solutions but the problem was not solved. Has anyone ever experienced this problem? Please suggest a solution.

Thanks in advance for your help