If it was done after the print, you could use water (mist) cooling, would probably help a lot with preventing plastic sticking to your endmill. If it's done mid

If it was done after the print, you could use water (mist) cooling, would probably help a lot with preventing plastic sticking to your endmill. If it's done mid print, you would probably like to do it for each layer, so no long cool times and it should be hot anyway for next layer. Using printhead for this (like for ironing top layers) would create a lot of blobs from dripping plastic.