I'd love to have a CAD program attached to a 3D printer just to make things that I have in my head. I use "Hillbilly CAD" (Cardboard Aided Design) well actually cereal box cardboard is my go to for making patterns and trying shapes before I cut expensive steel. When I cast aluminum I don't worry too much about making mistakes because when I screw up or don't love how something turns out I just throw it back into the soup and use it again. When you have to buy material to machine you make damn sure all your measurements are dead on and you make all your cuts perfectly or your mistakes go into the bin. They will get reused later for something but it really hurts my feelings chucking a big piece of 3 inch round stock into the junk pile and calling the metal store to send you another chunk of 6061. Anyway I had a bee up my ass wanting to make a fuel block for the Jimmy 302. I spent a couple days whittling and refining and casting and throwing mistakes back into the pot till I came up with this.... It has 3/8 pipe threads in both ends and 1/4 npt on top and a 1/8 npt port for a pressure gauge. Summer better get here soon , I'm running out of aluminum muffins....I really should be drinking beer by the pool if it ever stops raining.