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

Gas may be best from a corrosion stand point. Coal produces a lot of acid.

I think if you did a leak test with soap and water while inflated with air with the PV valve spitting... You could check all the seams. Any visual signs of corrosion?

I'll know more in a month as I will be at Steam School.

What pressure does it steam up to?