This design is a bed corner set for the ELEGOO Neptune 3 Pro (it may work on other models, but this has not been tested) made so that you can put back in place the magnetic build plate easily aligned.

Heat-resistant double-sided tape is required (as shown in red in the last photo) to attach the parts to the bed.

I recommend using a heat-resistant filament such as PETG, as it will be in direct contact with the heating bed.

Printing is not very easy, but the result is worth it! Supports are required for the right corner (do not change its orientation). The left corner can be printed without supports if you adjust its orientation.