This Thanos helmet is based off of the helmet we normally see him wearing in the Marvel Cinematic Universe. You know the helmet Thanos is wearing when he makes his post-credit cameos? This is the one! It is sized to fit a 23 inch head (or at least thats what it should be scaled for).
Hope you enjoy printing it as much as I did modeling it!
I am currently printing this. I will attach pictures of the finished product when I am done.