I have been printing a marathon session with the PEI and its preforming great almost to great and the parts are very difficult to remove with my first layer squish .002" to prevent curling so I tried some baby power and bam the the part sticks without curling and pops off with ease. Theses are buttons for my sons robotics competition this weekend. We have printed back to back prints for what seams like days..
Print specs. 65c bed temp 70+ was impossible to remove.
ABS nozzle 240c