Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

That demonstrator is very nice indeed.

You know, it's amazing what you can find lying around in schools. I once found a huge old power hacksaw under the stage of a school auditorium. It had been parked there by the shop teacher, who said it wouldn't cut properly. I dragged it home, and it cut just fine once I turned the blade around. 😋