Very happy with the results - and learnt so much making it - i.e. building my own vac forming table to make the visor.
Loads of sanding and spray painting, in-all I think it took me about 70 hours, but we wore the helmets loads for festivals and parties.
I no longer have the file sadly, but got it from a paper craft forum - where people posted them. Happy to share pics if of interest.
Wow how hard was it to make the vac forming table? Have you used it since? I'd love a link to a tutorial if you have one.