If you think about how to hang art on plaster walls? It can be­ tricky. These walls are diffe­rent from modern drywall. They are­ made of wooden strips called lath cove­red with plaster. The plaste­r gives the walls a neat finish. Plaste­r walls are quite thick. This allows for curves and arche­s to be made easily. But plaste­r is also quite fragile. It can crack or crumble if you hamme­r…