Hello all! So if I wanted to make and order a part to a device I am designing, where would I go to do that? I know this may seem like a weird question but here is my situation. My brother has two graphics cards in his computer and there is a VERY thin space between them, and because of that, they run hotter than normal. I am thinking that if I could somehow make and order my own heat-sink to put in between the cards and screw to the sides of the case, it could help dissipate the heat. Are there any companies where I could maybe send a mold of the part where they can cast the part with the proper material? It would be really neat if I could actually design the heat-sink instead of slapping together parts I find around the house. Does anyone know what I mean? I hope this makes sense! Thanks all! EDIT: I see a lot of videos of mini-engines people make them selves and I am thinking, "How do they get a cast of the block and all the other components!?"