Even if you do not own a particular product for which the model is intended, the steps in this section are good exercises in creating hand-built meshes. For example, the Creating the Water-Cooled Wall with Radiation, Convection and Temperature Model exercise demonstrates how to use the 2-D mesher on a multi-part assembly. If your software does not include the heat transfer extender, you can still use the exercise (with the analysis type set to anything else) to learn how to generate a 2-D mesh.