Make sure to ALWAYS note the dimensions of each computer part you're thinking of purchasing so that you can incorporate the part into your lego case! You must plan EXACTLY how each part will fit into the case. This is a serious pain in the butt and may be the crux of the lego case designing. Try keeping a little list of all the parts and their dimensions, including the case dimensions, (in millimeters or lego pegs) on your computer so you can work with it while designing.



There isn't too much I can offer to help with this section since the computer parts and the case design are up to you. The motherboard and the PSU should be the biggest parts in your case so if there's any way you can sit the motherboard or PSU up vertically it will save some space. I got the PSU to sit vertically in my case but the motherboard could be done by building little wells (where the motherboard screws and standoffs go) into one of the walls and smushing a little sugru into well to hold everything together. If you're going to hang stuff off the wall it will be difficult though because legos can take vertical loads but aren't very good at lateral stress. This means that a heavy motherboard may need to somehow touch the ground a little to take weight off the wall wells (as you can tell this is risky and complicated but try it if you're feeling daring). You might want to come back to this page after working on the project a while.



I found it was helpful to doodle a little map of the inside layout of the case to plan where everything is going to go. Each computer part is drawn in as a box and there are dimensions scattered about all over the place. To start the doodle draw the boundaries of the case you'll be using. Then just fill everything in accordingly. Look at the dimensions of everything and make sure the parts will all fit nicely in the case. (the picture is of the original design I tried)



Stick with it and you'll get it to work eventually!