Hi all, I'd like to try my hand at scratch building an O scale steam loco. I have a small mill and lathe (non-cnc) and a 3d printer, but no facilities to cast anything or machine stainless. I'm wondering if there are any sources to purchase steam drivers, side rods, and pilot/trailing wheelsets? Ideally I'd like to attempt something like a 2-8-2 Mikado. Have not managed to turn up much apart from the odd spare parts on eBay. Thank you for any pointers!