After upgrading to the PEI plate on my FLSUN Super Racer, I got fed up with trying to keep the bed plate aligned. I created this little fence to allow the user to place the plate against it and simply lay it down. It should align the circular plate neatly over the circular base. It uses the existing holes and bolts from the glass bed that came with the printer. I used PLA, but feel free to use any media you have at your disposal.