Just made a bench case out of some spare parts from this and some plexi. Going to order a some more 80/20 so I can make the legs taller and make some sort of brackets so I can use the pci riser cables and run 4 5830s per motherboard.
I was going to order the MyOpenPC Domo PCI stackable cases, but they are out of stock until July. You can get this 80/20 aluminum extrusion on eBay and Amazon, but with all the brackets and bolts, it isn't the cheapest.