If you would like to modify specific edges or lines, select the entities you want to modify and you can access Line Color, Thickness, and Style from the Context Toolbar. I also made some changes for some of the tools and the result can be seen below. I increased the thickness of the visible edges of the base in the selected view and placed in on the “Red” layer. Additionally, if you have a specific layer created, you can assign it to the layer from this dialogue as well.

We can apply this change to all views, or just the selected view. Unchecking this box enables you to modify the Line style and thickness for different types of edges like visible, hidden, and tangent edges. The ‘Use document defaults’ box will be checked, meaning the component display will follow the Document Properties of the template found in Tools > Options > Document Properties. This will bring up the Component Line Font dialog box. In this example, I’m selecting the base component of the army knife. In the graphics area, right-click the component in the drawing view that you would like to modify (you can select multiple components by holding Ctrl and can even make your selections from the FeatureManager design tree), and select Component Line Font. We’ll start with a component in an assembly. For whatever reason, here’s one way to do it.

Maybe you want to emphasize some part of the design or make the drawing easier to read. When creating drawing views in SOLIDWORKS, it may be desirable to display assembly components or certain edges of a model using different line styles, thickness, or colors.

Camworks font