To design a sheet metal heater in SolidWorks, start by defining the dimeio and specificatio for the heater, including the type of heating element and necessary airflow features. Use the Sheet Metal tools to create a base profile, applying the Base Flange/Tab feature and adding Edge Flanges for structural integrity. Incorporate necessary cutouts for electrical components, euring the design facilitates efficient heat distribution and assembly. After completing the model, conduct a thermal simulation to assess performance, and finally, generate detailed 2D drawings for manufacturing, specifying materials and fabrication processes. Coideration of safety and regulatory guidelines is essential throughout the design process.