Can you trim in SketchUp?

To extend objects, first select the boundaries. Then press Enter and select the objects that you want to extend. To use all objects as boundaries, press Enter at the first Select Objects prompt. The following prompts are displayed.

How do you cut out a 3D model?

Step by Step

1. Open 3D Builder and choose Open to select your model.
2. Select the Edit tab on the top menu.
3. Select the split action from the edit menu.
4. Select the Keep Both option from the split menu.
5. Position the cutting plane using the rotation gyroscope.
6. Select Cut to select your choice.