Concept and Design Hiya all. My old pc (1.3Ghz duron) is currently sitting un-used in a beige box. I'd like to turn this into a low-power media server / folding machine / something similar. Therefore it needs to be quiet, and fairly inconspicuous. When I built my current system I only had one case, so put the old system in a cardboard box (aka boxputer) during the transition. Amazingly I managed to fit it all into a cardboard box some of the components came in. This gave me the idea for the layout for this new case - except the PSU won't be resting on the PCI slots! (pics: here and here) The new case I'm going to build will follow similar principles, by seperating the boxy components (DVD drive, HDD, and PSU this time) on a lower deck from the more cooling-critical motherboard and parts on the top deck. Playing about in Rhino3d, I came up with the following plan: Front - Rear - Looking at the dimensions for this plan, I realised it needed a base size only a couple of cm smaller than a sheet of A3 paper - which is pretty convenient, as I could find 5mm thick A3sheets of perspex online quite easily. I decided to go with an A3 sized foot-print as it also minimised the number of cuts I needed. The roof would be set to standard A3 size (ie 420x297mm), and the height of the cuboid was set at 280mm, which gave 125mm height for the bottom deck (enough for 3 HDD stacked with room for airflow) and 140mm for the top deck, enough for full height PCI cards. The remaining 15mm would be the bottom and top, plus another 5mm sheet for the MB tray. Using these dimensions I planned a layout of the sheets which involved only 11 cuts, and would keep these edges to the bottom or rear of the case. The best tool for cutting I had available was my Dad's circular saw, so I was concerned I wouldn't get very straight/accurate cuts and wanted to hide these. I'd also considered cutting the edges at 45 degrees, so they'd line up with a seamless edge... but while the circular saw could do this it wouldn't have been pretty, let alone easy. Getting an accurate, straight edge suitable for building with is probably going to be impossible without a laser cutter. Anyway, after some feedback from a thread I posted in the Modding section, I revised my cooling layout. Previously I'd had 2x120mm either side, and the negative pressure from the 80mm fan in the PSU would suck down some air. But, everyone giving me feedback on the thread seemed concerned about the welfare of my poor 32GB HDDs. The solution: Two Antec 200mm Big Boys - I have one of these in the top of my Antec Nine Hundred, and for the 80cfm it pushes at low speed, it's pretty much silent. You need to hold your ear against it to hear any buzz noise from the blades, and the noise you hear from a distance is just the airflow through the grill. I'm going to get some AC Ryan Mesh to cover up the intakes, which should be a bit more stylish than the old school fan grills. One fan will pull in, one push out, and this will push some of the airflow through the bottom shelf as well. I've got a Zalman MFC1 fan controller, the black aluminium bezel can be removed so I'll drill holes for the 6 control knobs in the rear panel for control over all the fans. This will replace one of the DVD drives, but I doubt I'd need two. I'll also have to invent some 200mm dust filters. The primary function of this case could actually be to remove dust from the air in my room, not actually house a computer system. Now if this all seems like madness, fear not! Having the footprint of an A3 sheet of paper, I stuck two A4 together and tried fitting it all together. I used a spare bit of A3 clear perspex to support the mb. It all fitted together and I wired it up fine, only the thick rigid IDE cables caused some bother. I'll need to extend the 20pin power supply cable too if it's going to go round the front, but I'd rather make a hole in the corner for a cleaner upper deck I had planed to make the corner joints from brass inserts and cubes of perspex, but as you wont be able to see them I might just use metal corner brackets. My beige box could become a donor for a spare I/O bracket. For the PCI slots, I've not decided if I'm going to hack the rear section of my beige box and mount it in, or just cut holes in the perspex as required. Incidentally, all the functional parts will be mounted to the rear (inc DVD drives, which will be rarely used), leaving the front panel completely clean. I might mount a LCD/matrix display at a later date, if can think of a use for it. Really, this case is a blank canvas.