I'm pretty new to blender and im having a problem with a building that I'm trying to 3d print.
So far ive been able to separate the base, building and roof.
I now need to cut the main building into 4 pieces for my printer, so I have done so with the bisect tool, but the building inside is hollow and I have to make new vertices to make the outside walls.
So here is where I'm getting stuck. I can fill the walls by making new vertices and using the fill function aroun the place manually but I always end up with the file with holes and cura still assumes the object is hollow and the stairs won't even show up in the program.