Rebirth at the End of the World: I 3D Print Everything

[The end of the world + rebirth + no hoarding of normal supplies + unlimited printing of items + high technology + revenge + strong men and strong women] Facing the sudden apocalypse, Gao Yunfeng died in the civil strife in the survivor base as a small figure. Reborn two days before the apocalypse, with a 3D printer in hand that can print all necessary materials by absorbing water and metal, Gao Yunfeng must survive the apocalypse stably! Living supplies? Print! Various weapons and equipment? Print! Shelter? He won't go to the survivor base this time. He will rely entirely on a 3D printer to build a super doomsday fortress! Seeing people in the apocalypse destroying their humanity just for a bite of food, Gao Yunfeng sat at home and lived a more prosperous life than before the apocalypse. Any organization or individual who wants to invade him will fight back with tanks and missiles! Crowd: "Supplies are becoming increasingly scarce. One person's strength is too weak, so we should join the survivor base." "I think Tianjiao Community's organizational and humanistic management is pretty good." "It's not a bad idea to join a small gang to have food and clothing." "We can't just hang together and starve to death, right?" "Let me go, who does that Doomsday Fortress belong to?" (The male and female protagonists have no emotional lines, both men and women are strong, and the protagonist has a group of powerful friends)