KiCad的3D查看器可以显示封装的三维效果，当然前提是已经为这个封装关联了3D模型。3D模型的文件比较大，因此在安装KiCad软件的时候，缺省是不安装的，可以后期根据自己的需要按照向导来安装。

如果要安装 To install the 3D shapes, start Pcbnew, and start the Wizard by clicking on Preferences, 'Add 3D Shapes Libraries Wizard…'.

Figure 55.1: Start the 3D install wizard.

The wizard will ask you a few questions about which 3D shape libraries you want to install, and where. I choose to install them in my KiCad libraries directory (Figure 55.2). Figure 55.2: Define the 3D shapes library location. Next, the wizard will ask you to select the libraries you want to install. I select them all so that I can have any existing libraries updated, and new ones downloaded (Figure 55.3).

 474

Figure 55.3: Select the libraries to install. Next, the wizard will give you a review of the work that it will do. Existing libraries will be updated, and new ones will be installed fresh. Figure 55.4: Review the libraries that will be downloaded. Click on Finish to start the download. For slow Internet connections (like mine), you may want to consider doing this overnight. It may take a few hours to complete (Figure 55.5). Figure 55.5: The download process will take up to a few hours. In the end, the 3D viewer will be able to use 3D shapes for many of the most common footprints, but not all. In the example of Figure 55.6, you can see a board with some of its footprints represented using available 3D shapes. Not all of the footprints do. Figure 55.6: Many, but not all, footprints have 3D shapes.