First of all, let me introduce myself. I am 33 years old, and live in the north of Spain. I work as mechanical engineer. My native language is Spanish, so sorry for the misspelling and grammar mistakes I have been playing with some mods, during last 4 years. This project is my third one. Here are some photos of my 2 previous projects, with them I win some modding contest on local LAN parties. Mi current Project is call G-CORE (Green Core), but it is a provisional name (but perhaps definitive) I am working to have it ready for the Campus Party, which is the biggest LAN Party here in Spain. It is going to be the last week of July.[/SIZE][/FONT] Fist, a draft of how this mod it is going to look: The name came form the idea to add a light inside the reservoir, so it would look like a nuclear reactor. The idea is to have a big reservoir (about 35 liters), so it would not need a fan or radiator. I not 100% sure, but it the performance is not what I expected, I would add one at the end. The reservoir is going to have two pumps at the bottom of it, one for the CPU, and the other for the GPU and the motherboard. The motherboard and the hard disk are going to be on the upper case, and the psu, start button, LCD display and DVD drive are going to be on the box outside the case. To build the reservoir I started to bend an acrylic sheet with a heat gun. This method has 2 problems; it is very difficult to achieve an even curve all the cylinder, and you need something to join the ends. I was not very happy with the results, so I look for an acrylic tube. After a lot of searching, I find this tube of 200 mm of diameter. For the caps, I thought first to glue some flanges made of acrylic, and use some acrylic disk to cover it. But I founded this PVC parts that I think I would do the job better. The caps have like a screw, so it very easy to dissemble it. The problem is the caps have 200 mm of diameter, and a joining part is needed. The joining fitting has 200 mm of inner diameter, so you put the caps in one end, and the tube in the other. I couldn’t find this part locally. The only I could find was this elbow, which has that type of fitting in one of its ends. With some dremel action I cut the parts I needed.