(I hope I’m posting this in the correct subforum this time) I recently tried TPU for the first time for a flexible action figure part and the surface is obviously a little rough. However, when I tried to lightly sand the surface it only made the surface texture 'fuzzier' and compounded the problem. The part I had printed is a detachable face with eye-sockets for articulated eyeballs, with the face piece making use of TPU's elasticity for the sockets. So, my question is simply how does one smooth out the surface of TPU? Is it through ultra fine sanding, or do I just need to lightly coat the surface with some form of flexible acrylic like Pledge floor polish?