This is a Modular mount that allows multiple Raspberry Pi cases to be mounted together. This design was to keep my cluster together whilst allowing me to add to it without much difficulty. Three different versions of the base plate are made so that they can be pieced together without much hassle.
Special thanks to BaudlerArtDesign, who designed the best Raspberry Pi case I have ever used. Six years have passed since I came across their design, and I'm still using their cases.
The author marked this model as their own original creation. Imported from Thingiverse.