Did not want to uselessly buy corner brackets, these ones are exceptionally strong (especially since they are printed with 4 walls).

I am using mine for my DIY 2020 system laser cutter. I have found that w/ 4 walls, these make a PERFECT replacement for metal brackets.

Printing these in PLAPro/PLA+ provides even better performance.

I use my own naming scheme for gcode files:

{model_name}_T{days}.{hours}.{minutes}_{material_type}_{material_in_grams}_v{version}.gcode