Rack for Three 3.5 inch External Hard Drives

I wanted to be able to stack three 3.5-inch external hard drives.  So I created this simple ventilated rack. It fits three external hard drives.  Each drive can have maximum external dimensions of 127mm x 38.1mm (5 inches x 1.5 inches), which is pretty standard.  It even has little built in feet.

P.S. This design could use some optimization. It prints really slowly--all the ventilation holes mean the extruder is always making small slow moves.  With a 0.4mm nozzle, the print could take two or more days!  I printed using a 0.6mm nozzle which cut the time about in half.  Despite these problems, the rack works well for my needs.

If you want to tweak the design, I've included the original Fusion .f3d file.

Thanks for reading, and I'd love to see your makes!