@dave r said:

Get the Select tool and double click on it somewhere. It'll open for editing. It might be that it's made up of sub-components. If you see more blue bounding boxes, double click again to open for editing. Do that until you get to the edges and faces.

Thanks, this helped me.

@dave r said:

Is there any chance you can share the SKP file or at least a screen shot showing themodel when you have opened the component for editing? Otherwise we'll be here all day playing twenty questions trying to get this sorted out.

Maybe it's a nested component? It could be a lot of things but you haven't given us enough information. Help us help you.

You can find the screenshot of image here after I have click it with black arrow: http://www.pkall.fidisk.fi/sketch/index.html

@dave r said:

What is the object you're importing? Where are you importing it from? If it's really locked, it'll show a red bounding box when you select it. Right click on it and choose Unlock. Then you can open it for editing. If it is simply a blue box, it isn't locked. Just double click on it with Select or right click and choose the appropriate option--Edit Component or Edit Group.

It is a blue box. I have imported 3D Step files. I double click it an choose Edit Component. But still I can't activate the single line with the Arrow tool! I can only rotate the hole element.

How I can edit imported 3D object in SketchUp Pro? Or is it not possible? After the import the object is like "locked".