Actually I'm going to try to "ghetto" mold my own helmet, I work good with plaster, so I was thinking of resin/glassing the FS original HD helmet, then adding the visor in and then plaster molding it into pieces rather than being 1 piece. Then I was going to try making the cast pure fiberglass. I've read about similar objects being done this way, but for a helmet, I'm not sure. Heck there's always hot glue, but that would melt if it ever got hot, which is a major downside.
i may just ruin the entire project, but heck, if it teaches me it's fail, it shows all not to attempt.