Step 1: Download and 3D PrintDownload the 3D printing files for free.3D print your custom engine parts using your own 3D printer.Step 2: Get your hardware kitGet all remaining non-3D printed parts delivered to you.Step 3: Build something awesomeUse the Instructions to assemble your custom 3D printing project.Why 3D Print Your Model Engine?Pick your own colors and customize your engine.Upgrade your engine with the designs uploaded to the open 3D printing communities around the internet.Learn 3D printing and become part of the global maker community.Why Buy A Hardware Kit?Make building easy with clearly labeled parts.Save time searching for hard to find parts.Save money and only buy the parts you need for the project.Support the maker who designed and openly shared their work.