Update 10/25/2016: thickened the walls up to between 4-6mm depending on the piece. I had issues on the test print with the thinner walls. Now it prints perfectly.
I modeled the Iron Man MK46 Helmet for those who want to print it for themselves. The model is cut into different sections (take a look at the pictures). They can be cut into printerfriendly pieces with netfabb basic or meshmixer easily. I tried to be as accurate as possible with all the new reference from the Bluray. If you guys find something that isn't, please feel free to let me know and I'll try to update the model. The helmet is scaled to fit a medium sized head with a circumference of 58cm or 23 1/2 inches.
Reselling this file or making casts of the 3d printed helmet is not allowed with the purchase. For personal use only. If you want to cast it, please contact me.