Do I need to make a Model for a Patent?

People bring in models sometimes, it’s really not necessary. The patent office doesn’t require them. Hundreds of years ago they did. It’s something that’s not done now. However, what’s very nice is CAD drawings. For example, some people come in with them, other people, particularly independent inventors may bring in something that they’ve made at home, or something that is made on a 3D printer, whether at home, or by a special company that does that kind of work. And it helps, but eventually it has to be reduced to drawings, or photographs.