A new powerful tool introduced SolidWorks 2013 is Intersect. Intersect enables you to perform complex operations to quickly combine surfaces, planes and solid bodies in practically any way you need without the need for multiple cut, trim and fill features. The tool’s visual interface allows you to do all the experimenting you’ll need in order to create the final shape you want. The following is an example of how Intersect can help you to quickly build a part from multiple intersecting bodies.

This is a junction box. The goal is to add four connection ports for the conduit that currently intersects the body of the junction box.