I was debating as to if I should post this now, or once it's completed, but thought what the hey. I water-cooled a while back, but have since gone back to air cooling. Inspired by a few guys on OCAU recently but deciding I'm really happy with my Lian-Li V1000 case and there's no room to put good water-cooling in it with all the gear, I've opted to go the external water cooling route. The inspiration for the design is the Mac Pro, and just generally elegant, simple shapes. There'll be more to come, but the whole system will be cooled by a single 200mm fan, and will be fitted with 3 x 360mm radiators. The cooler will be a self contained unit, meaning it'll have its own pumps, reservoirs and piping. On the back (Pictured in the first picture) will be two quick release plugs (not pictured). One for incoming and the other for outgoing water, this will connect to a PC and allow for easy transportation. The vast majority of parts will be 3D printed in PLA, and has already started. Because of limited size volume of the 3D printer, each component will be broken into several pieces and printed that way. I was originally going to outsource some 3D printing (core) but at nearly 700 to print in a single unit, it was too expensive. The other components I was going to outsource was the exterior to be done in sintered stainless steel, but the cost was so high, I could buy a Mac Pro, tear it down and use it to make a cool water-cooling system, and buy a second one to use for real. Click to view full size! Total View Click to view full size! Exploded View It should be noted, that while it has colour here, the final unit will be painted black, as well as being puttied to fill in crevices and imperfections in the finish of the 3D Printing process. UPDATE 1: Printing Update I've printed out two components for the core so far. The top flange that adapts it to the 200mm fan. There's a few imperfections (not shown) in the flange surface, which will need to be sanded and filled properly. Each part takes about 12.5 hours to print (So far 25 hours) on those alone. Click to view full size! Next is the start of the core. This will sit immediately under the reducer that's been printed. Here's a photo of it coming along nicely. Click to view full size! UPDATE 2: Minor update to the design. Due to printing limitations, and necessity for additional strength in the outer shell, I've changed the fin design to a diamond grill. I also think it looks better, and will be easier in the long run. Click to view full size! UPDATE 3: Click to view full size! Click to view full size! Click to view full size! Project currently stands about 20cm tall.