My husband used to for for a restoration company in Central New York. Some of the architectural moldings that he's replaced are just incredible. Making molds of a good part of the structure then copying it, slowly overlaying it to create an entire new piece is very time consuming. I remember the one time that he found himself on a lift removing a weathervane that was over a hundred years old on a barn in Pennsylvania. He called me to search for weathervanes for sale on the net. I found three that was so close that you couldn't tell them from the originals. It saved him hours and hours of time by buying these instead of making these from scratch.