So this is the prototype a friend has made that holds 8 GPUs, which will work well with the 16x 8 way splitter that is currently under development. This is NOT a final design and there are already a few things I want changed, but it's progress in the right direction. Welded aluminum frame and we're shooting for a selling price of $100 worth of GPUC.
Working on raw alluminium or others alloy can be worth if you have in mind a design with custom/complex shape, otherwise why bother with it when you can use extruded profiles?
I understand that it's just a prototipe but keep in mind that if you are gonna to design a complex shape is imperative to work the pieces with a CNC machine in order to cut them neatly, equally and speed up the build process.