Our build-plate is very flat and will last forever with proper care. Heavy users might want additional build-plates ready for non-stop printing without any downtime for cleaning or removing print before restarting. Accidents may happen so never expose the build-plate with resin on it to direct sunlight! That will take time to clean surface if you let the resin cure to it. G3Dit!
Cleaning information and care: can be found inside T-1000's manual.