I'm don't mean to rain on any parades but I would get some opinions before putting a helmet in the family oven.
I've read in other threads about possible flame ups and also leaving a paint smell in the oven. I think somewhere
on At The Fronts website it's discussed and if not there it's around somewhere because I remember reading it and
they were discussing that a regular oven is not made for attaining the heat that needs to be applied to a steel helmet.
I hear what you say and I suppose it's a valid point worthy of consideration. The whole paint-cork-bake process is the technique advocated by the supplier of the materials I used. I had no problems of the type you describe. I suppose it's up to the individual whether to go down that road or not. Safety first!