Modular Pi Stack (V1)

I was looking for a way to consolidate some of my raspberry pi servers. I had a hard time finding a model that included the existing case. Many cases include useful perks, like fans. So I made a model that would let me stack as many servers as I needed and would accommodate most raspberry pis, with their case. I included a few spots where the pi can be mounted with zip ties. Notes: If this current size does not fit your pi/case, try scaling the model up or down. V2 will be stronger and (hopefull