For stable 3D printing, I recommend using the Cura software of the official latest version.Use 3D modeling software for this, I recommend Meshmixer, Blender or Autodesk Netfabb Then you have to divide the model into smaller parts. These are STL and OBJ files, they allow you to print this helmet on a 3D printer. Any help with further lore or ideas let me know.Please read this and feel free to contact me if you have any questions =) Color sheme is black armour with gold knee pats, gold shoulderpat on the right, cresent moon in gold on left shoulder patch, scars of gold on helmet and (packs I am not sure about yet). And with the approval of the High Lords, the chapter made it their homeworld and continued using the local population as recruits which are now called the "Night scars". Then, when Second Founding happened after the Heresy, this same chapter wanted to go back to that world. Some chapter of the IX legion, after suffering high losses after a particularly hard campaign or a series of battle, decided to stop in a nearby recently discovered planet in order to recruit some of the local populace to replenish their ranks and discovered the primitive population used gold to heal there wounds. There symbol is a cresent moon and scars of pure gold on there helmets. Their battle cry is "No scars, no glory". One day a year they al gather under the moon on there home planet for the full moon festival where they choose there most enlightened and duss bravest warrior. It lights up in the light of there biggest moon "Oberon", because there planet has 5moons (Oberon, Jarnsaxa, Tarvos, Aegir and Styx) that orbit there home planet "Baarthymir" The gold they use is a special type of gold that can only be mind on there home planet and they take it with them on there crusades. Night scars, they use gold that they pore into there fresh wounds to heal them and harden there skin for future battles but also as a sign of bravery and past battles.