Sorry about the example - I did not see that my AddBlocker was preventing the attachment. Here is an attempt after disabling AddBlocker:

Intersect Faces Example.skp

I cannot, for the life of me, figure out how to intersect faces. Here is a simple example:
Intersect Faces Example.skp

This example shows four groups. I would like to intersect the faces and delete the unwanted parts - for example, the ends sticking out should be removed.

I feel stupid because this should not be difficult. I can do it if I explode each group, select all, and intersect faces. Is that the only way to do this intersection? I ask, because I have had to do it that way on complex intersections and the cleanup takes a long time.

Thanks for any advice/tips.

@gilles said:

Look at this:

http://sketchucation.com/forums/viewtopic.php?f=323%26amp;t=56852

And, please upload your model as V6 (save as/sketchup version V6).

Thank you for your reply. I have investigated the MSPhysics plugin (thanks to Anton_S) and it has help me with my design.

Why do you want the model uploaded as V6? Is this a standard for model uploading?

Is there a way to constrain component movement by one or more constraints? For example, I am designing a pantograph for my workshop:

I would like to constrain the movements of the arms to pivot about their respective pivot points.Pantorouter.skp