This is a remix of Jace1969's Darth Vader head into a lego compatible head. He has lots of great models go check out his stuff.

Make sure you turn on “detect thin walls” and "Extra perimeters if needed" as the helmet is pretty thin in places.

I am building a set of lego heads so that my kids can try playing Star Wars Legion using lego figures.

https://www.printables.com/social/90982-ian-foulds/collections/394300