If you’re kind of nerdy, nothing beats making your own window and door components for your SketchUp models. Here’s what you need to know to make your own components:
Draw a rectangle on a vertical surface, such as a wall.
Delete the face you just created to make a hole in your vertical surface.
Select all four edges of the hole you just created; then right-click one of the edges and choose Make Component from the context menu.
Make sure that Glue to Any, Cut Opening, and Replace Selection with Component are all selected; then click the Create button to create your new component.
With the Select tool, double-click your new component (in the modeling window) to edit it.
The rest of your model appears to fade back a bit.
Use the modeling tools just like you always would; keep building your door or window how you want.
When you’re done, click outside your component to stop editing it.
If the opening you create ever closes, one of two things probably happened:
A new surface was created. Try deleting the offending surface to see whether that fixes things; it usually does.
The cutting boundary was messed up. The cutting boundary consists of the edges that define the hole your component is cutting. If you take away those edges, SketchUp doesn’t know where to cut the hole anymore. Drawing them back in usually sets things straight.
