Joining the fairly limited club of stackable PC case designs is MASS, a 3D printable ITX NAS case design from Haydn Bao available for download through Printables.com. We picked up this story due to a recent Tweet by Printables, but technically MASS has been available as a design since January.
Technically, the MASS (Modular Attached Storage Stack) NAS comes in two different models: the MASS Free and the MASS Premium. Either needs to be printed and assembled by the end user, but Premium is needed for users who still want a PCIe slot or Flex PSU bracket. Premium also adds an extra fan slot and supports a few more drives, but is slightly wider than the original MASS Free design. You can print these parts on any of the best 3D printers. You will need around 1-2KG of PETG filament. PLA would not be up to the job, the heat and stresses generated by the components could easily warp the plastic.
