Custom L-Shaped 2x4 Workbench

The attached 3mf and STL files are custom brackets designed to easily allow 2x4s to fit together in the appropriate pattern to create your own custom DIY workbench from nothing but some PLA, 2x4s and plywood. As you can see from the pictures this came out great. I am still using it today and it is stronger than anything else I have around the house. However, there are some things that need to be disclosed here. Firstly, I worked on this project several months ago with the intention of posting it, but things came up and it took awhile to get around to it. I know that the first 2x4 bracket that I used was based on a 3D model somewhere online and I tried to link to it to attribute the remix, but I simply cannot find it. Honestly that highlights why I am bothering to post this model now after so much time. I knew that there were kits that you could buy from the store to do this type of thing, but surely it had to exist for me to print for free. I was shocked at how hard it was to find anyt