For a household electric heater designed last year, the customer requires the body to be made of sheet metal parts. Therefore, the design is based on the process characteristics of sheet metal parts. The main frame of the body adopts sheet metal bending process. In order to meet the simple and friendly characteristics of household products, a relatively large round design is adopted to reduce the cold feeling of metal. Through continuous communication with customers, a lot of processing knowledge about sheet metal products has been learned in the process, A very interesting design experience.