response: They are made through digital data models or from data source like certain files called additive manufacturing.
original_response: That's so cheap! What do you like to make with it? I would love to use a digital model to create a 3D one.
history: I enjoy making sculptures. It is considered a plastic art. I've being toying with designing sculptures digitally with CAD and then 3d printing them. I'm not sure what CAD is, but I do know about stereolithography. It's one of the most common file types for 3D printing. CAD is computer assisted design. I see. It is used to help the design with things like modification, creation, optimization and analysis. That's the one. I'm an engineer by trade so it is a tool with which I'm familiar. There are a lot of material that can be removed, assembled or molded. Yeah exactly right. These materials can then be made into objects with computers. Do you know anything about that?
knowledge: Objects can be of almost any shape or geometry and typically are produced using digital model data from a 3D model or another electronic data source such as an Additive Manufacturing File (AMF) file (usually in sequential layers).