I second what dirtdives said. That helmet looks fantastic.
I myself have been trying to talk myself into building a vacuform machine. Let me know how it goes with yours, I'm interested to see hous it turns out.
Thanks and will do. I'll document it as well. Ordered a helmet from Sean Bradley a couple of weeks ago under the belief that I would botch this whole process up. Now I think I'll still get it just to see how close I came to his. LOL.