A4 Size NFEP Films for medium size Resin 3D Printers
NFEP film also called PFA Film is better than standard FEP film to reduce suction forces.
It is basically a better quality of the non-stick surface so it reduces peel forces.
So parts are less likely to stick to film or pop off from the build plate.
You should change your FEP film when its cloudy, has excessive scratches, or you find the prints stick to it too easily rather than the bed.
Depending on several factors, this is usually around 200 hrs of printing.
