is here. The stripped helmet is at the left. (The M40 designation refers to the year the model was created. World War I helmets included the M16 and M18, and more modern helmets were the M35, M40 and M42. The differences in the last three models are subtle.)
I notice that the rust remover dissolves the rust, but leaves behind a dark mark where the rust used to be. This can be ground off, but I have neither the time nor patience to do that, and, it isn't necessary.
Next step: priming the helmet. I am going to use a Rust-Oleum product that supposedly turns rust into something else that can be painted over. If any small amounts of rust remain, the Rust-Oleum should kill it and prevent more rust from forming. I'll give it two coats.
The question is, where can I spray paint my helmet with the primer and later the paint? I suppose the kitchen table is out of the question.
I have a nice work bench in my garage. Unfortunately, it is covered with storage boxes. Maybe I can remove them temporarily. I have to paint the helmet when my wife is gone for the day, probably on a shopping trip to San Jose. Otherwise, I will have to paint it under an extreme barrage of nagging, warnings of doom and destruction, and loud verbal expressions of angst, fear, horror and disaster.