1-to-4 HDD Stackable Raspberry NAS with PSU v3

Designer : OpenSCAD Slicer : Cura Printer : Creality 3D CR-10 Material : PLA Optimus 1.75 White (filament-abs.fr) # Compact Stackable Raspberry NAS with PSU and between 1 and 4 hotplug HDD # IMPORTANT If you use spinning disks (not SSD), they will heat a lot (up to 80°C). I added a 120x120 5V cooling fan on the side to keep temperature below 30°C. 20190125-EDIT: I also designed an enclosure to include the 120x120x25 5V fan This is the second version. The v1 was hard to assemble (typically the bullet connectors for the power rail). It was way too high and not so compact. I compacted the HDD and RPi levels I changed the stack assembly to use M2x3mm screws I removed the bullet connectors with a tradeoff by soldering. # Goal A small NAS using a Raspberry, with 4 HDD and a power supply, to save energy and space. It does not have to be lightining fast for my home needs (backups, photos/movies/music repository, ...) Result : 16 Watt instead of 70 Watt! ## Desi