The Clash detection tool is located in the mechanical tool palette located under Tools in the menu bar.

A ‘clash’ is the result of two objects in your design taking up the same space. A clash detection is the technique of identifying if, where, or how two or more parts of a grouping interfere with one another. Clash Analysis is suitable for checking mate, align, and interference checks for parts and assemblies. Example types of interference may be:

—volume sharing
—face sharing
—edge sharing
—vertex sharing

The Clash Detection tool will report up twenty different types of clashes.