Russian engineer just solved the one problem stopping anyone from building a real Iron Man suit The biggest problem How do you manufacture armor that looks movie-perfect protects like a motorcycle helmet and doesnt cost fifty thousand dollars per piece 3D printing melts in sunlight Traditional carbon fiber takes three weeks per helmet and costs more than a used car Alex invented composite rotocasting Takes a 3D printed master creates a silicone mold then spins liquid polyurethane inside it The p

Watch the evolution of how Marvel animated Iron Man's suit. | Insider Entertainment