1. First, we open the CAD software in the computer to open the drawing, and then click the layer icon at the top of the interface to open the layer manager. Then we find the layer we want to keep alone. Then, we click and select the layer we want to save, and right-click.

2. First, you can use the layer shortcut key to switch. The following figure shows the layer switching panel on the interface of Yaochuang CAD: layer switching Other CAD can use this panel to switch layers.

3. First: Use shortcut keys to quickly open the Layer Properties Manager. The shortcut command is LA (layer). Enter the letter LA and confirm to open it with a space. Once opened, you can use the functions in the Layer Properties Manager to manage and set the properties of each layer in the drawing.

4. First run the auxiliary function in the mechanical menu-layer transformation tool-thin solid layer (as shown in the figure). Then, according to the command prompt, you can quickly switch to this layer by pressing ESC or enter.