Here we have the T45-d Power Armour helmet from Fallout 3, consists of 49 items and the main body of the helmet breaks into 12 pieces that are doweled together. Due to the size and shape of pieces that make up the main body some sanding may be involved to give a perfect fit. I've designed it so that the lens can just be cut from any thin tinted plastic can be inserted inside where it is held in place with locking tabs.
I would want to test print this myself but knowing the fan following someone is bound to beat me to it, so if anyone has feedback on the tolerances or assembly please feel to contact me.
Happy printing and remember, tunnel snakes rule!.