Hello there!
heres my Mandolorian helmet 3d printing 1:1 (life size) scale helmet
it has 3 variants to print:
1 piece, 2 pieces or 4 pieces.
scale is 1:1 and size of the helmet is: 28,1 cm height * 24.9 width * 25.8 length for a far points
You can also resize it as you want. This is the way!