I've built a number of Verlinden kits, both resin and plaster. For the resin ones, CA works fine after prepping the mating surfaces. I prefer the plaster as they are easier to modify, add bomb/bullet damage, etc.. One thing I usually do, especially if the building has upper levels or more than two corners, is to drill small holes in each mating surface, then insert pieces of round toothpicks (like re-bar) to help strengthen the join. Allow to dry for 24hrs at least. Prior to painting, spray a light coat of matte finish cause the plaster tends to soak up your paint. Hope this helps!