I appreciate your responses. I am preparing some models to show some teachers how SU might be used in the classroom to teach and engage students. I agree with the comments about the size of the model and how it is hard to view anyway. I think notations that relate the size of the solar system to things students can relate to would probably be more effective. Sean

thanks for (jointpushpull) cause i have the this problem....but i want a resolve for( tools on surface) as fast as you can ....pleassssssssssse cause i have Graduation project and i use sketchup to do it cause sketchup is wonderfull....thanks

Middle age at the 21 century!