This whole post is troll food i know,:fan: but I have questions being a noob model steam engine builder. i bough a small lathe about a month ago after seeing some model steam engines I knew I wanted to build one or 20. so i have been watching 500,000,000,000 youtube videos on model steam engines. i already do alot of welding and fabricating with steel. and I have several plans and designs that i like but I am doing my own design so I can do my own eye candy & polishing & rivets too. my plans right now are for a 2 cylinder 2 beam engine with 2 flywheels. as far as steam engine metals: what is the easiest / cheapest / best / readily available metals? when i do my own bearing blocks, does copper on copper wear better / outlast brass on brass? or should I do some copper on brass combo? aluminum? and how about larger/thicker pieces or aluminum, brass, or copper? best sources? assuming I wanted to fabricate a cylinder and a slide piston all in 1 solid chunk of brass/copper, could I silver solder 1" thick slabs to give me the size I need to machine out my parts? i.e. 2" bore x 6" stroke. I was just wondering about a piston sliding up and down past a solder joint and how that would wear. also what are my options boring a hole this big in brass or copper or aluminum. maybe even a solid aluminum block with a brass or copper cylinder sleeve pressed in? flywheel questions.. can you add something to lead while molten to make it harder when cast? I know how to work harden it, and I am set up to melt and pour lead now. crankshaft options? i thought of stealing one from a weed eater or chainsaw engine? but thats kind of cheating. any specific tools I might needs? special bits for boring? my lathe does not have a tailstock so i will have to use my drill press for all boring / drilling. to the people who read this far without reminding me how stupid i am, thank you for all your tips help, advice, criticisms, and so on. thanks..