Added SketchUp file.

I have begun setting up my own 'ownCloud' server using a Raspberry Pi. I wanted to use a harddrive to have maximum space (currently using a large USB flash drive) but didn't want a load of wires etc. to make a mess. So I have designed this case (based on my RetroPie case) to be able to hold a harddrive internally using a USB to SATA cable.

The HDD/SSD is attached to the upper half of the main case and retained using two clips. The current clips will allow for a 7mm drive but the size can be changed for different HDD/SSD thickness's. The USB lead is passed through the case, via the hole in the rear cutout and into the port on the Pi. There are now two different lower parts, one for passive use that just has slots to allow airflow, another that has an opening for a 40mm fan.

I am thinking of using an SSD as the Pi may not be able to supply enough power for a HDD.

Have tested the clip idea and it seems to work. The image is of a 9.5mm HDD and it is held in place quite tightly.

Have uploaded an image of the top with the HDD mounted (I recycled the clips from the test piece. It is inside and I hate to waste things!). Hold really well. Using a "Sabrent USB 3.0 to SATA" adaptor, chose that as it is small and compact. Other adaptors needed to much depth.

I have finished printing all of the parts and it is holding together well! Updated with some glamour photos of the final case.