Before a final model is attempted, a preliminary or visual model is made in order to obtain a better concept of what the final model will look and work like when completed. Visual models are created to show what a completed model will look like. Preliminary models are intended to show how the product works. Prelim models can manifest in a few different forms and materials, depending on the intent. They can be foam study models that show the form and complex surfaces of the product, along with size. They can also manifest as a plastic mock-up of a mechanism, or demonstrate individual component parts. Visual models can be painted or textured, with graphics applied, to simulate how the product will appear in production. Prelim & visual models are intended to give the user a “hands on” look at the product, early on in the design process, and to assist in business and packaging decisions.