if you stay in your bases raids will keep happening. The game doesnt want you to become "farmville" its encouraging you to fight.. if you must build something huge ( as i like to do) If you are poorly prepared, then you are maybe in the wrong biome to build a base at that time. from memory raids can trigger after 45 mins... so 6 hours is 360 minutes, or 8 raids... :-) Winner!!! if you must you can use devcommands and "ghost" while building seems to help.. but i find i dont really need it... unless im rebuilding something with new materials... sometimes... ok.... fessing up!!! i have a three storey stone floored building on each level in a round building.. so it took a while!!!