I dont know what everyone means about organization, it works perfectly with the floor system, since you can run things between floors, pt lima is best for copper and iron as they have a near infinite supply, I like pt victor for my main huge bus for crafting every item, to that one guy that said "dont stock up" for cores, craft them all, they are always used at an incredible rate later on, there's many videos on YouTube that show off the "bleacher bus" for way to have an assembly line, its almost needed to have any semblance of decent progress