CBaileyFilm writes:
In this exciting episode we create a laser particle system that explodes into a secondary particle system of sparks when it hits an object. We also look at how to turn particles on, off and then on again! Something technically impossible for blender to do! This overly complex walk-through is all you'll ever need to understand how to make particles dynamically react to each other. There are limitations to what's possible with particles in blender, but we take things about as far as they can go. So buckle up and get ready!
