Class A surface

A common method of working is to start with a prototype model and produce smooth mathematical Class A surfaces to describe the product's outer body.

Class A surfacing complements the prototype modelling stage by reducing time and increasing control over design iterations.

and all visible surfaces of see-touch & feel parts in interior (ex: Dashboard, seats, door pads etc.).

This can also include beauty covers in the engine compartment, mud flaps, trunk panels and carpeting.

[1] In the product design realm, Class A surfacing can be applied to such things like housing for industrial appliances that are injection moulded, home appliances, highly aesthetic plastic packaging defined by highly organic surfaces, toys or furniture.