Q: We recently bought a 1926 colonial in Melrose with mostly horsehair plaster walls. This is my first experience with plaster walls, and I'm afraid they are going to crumble when I hang artwork, etc.

The Plaster Cast Workshop of the GrandPalaisRmn has molds of more than 6,000 artworks such as the “Venus de Milo” and Alexander the Great’s foot. An artisan at work in the Plaster Cast Workshop of the ...