hi,i do this model with 3ds max, the helmet is ready to be printedit was cut into 27 parts, object cutouts were made for a printer with a 30cm x 30cm print bedif you have 20cm x 20cm print bed you can use software ( netfabb, Meshmixer or other)for cut the objects.the size of the helmet its44,5 centimeters high26,5 centimeters width