I started to see that when loading the build plate sometime I hit the corner of the storage box corners so in order to protect them I designed these bumpers. 

I designed them as slim as possible for 8x1.6 mm magnets and I also made use of the small holes in the corner for mechanical lock as well to keep them in place. 

You will need 4 magnets, two per each side. The hexagonal holes are made for press-fitting the magnets in place so no need for glue, then you can easily reuse the magnets when you want to exchange the bumpers. 

Included STEP file incase you want to change for the magnet size you have. 

Tested to print with 0.4 mm nozzle and both 0.2 and 0.15 mm layer hight, on the pictures is the print using the settings in the .3mf file which is 0.15 Balanced with hexagonal infill. I will print these as well using 0.25 mm nozzle and 0.1 mm layer height with Prusament Galaxy Black to have them blend in more. 

Happy Printing!

The files provided are for personal use at your own risk. I make no warranties, express or implied, regarding the safety, reliability, or suitability of any printed models. You are solely responsible for verifying that any downloaded design is safe, functional, and appropriate for your intended use, including but not limited to material choice, print settings, and post-processing. By downloading or using these files, you agree that I am not liable for any damages, failures, or consequences resulting from their use.