A friend of mine wants me to build a trebuchet. I have been doing a little research, and I haven't made up my mind if it is something I want to do or not. It seems like it will be pretty difficult to build just do to the size of it. A catapult would also be fun, and possibly easier to build. I'm going to look into that a little more, maybe I'll bust one out. I am only working PT right now due to a back injury, so I have a ton of time on my hands. I build stuff all the time to keep from going insane, as I have a full woodshop and most of what I need for metal fab. If anybody knows of some good catapult plans, let me know!