In this tutorial we’re going to concentrate on creating an effective array of sparks, specifically those emitted from grinding metal. Now you may think it’s a pretty straightforward procedure; however, depending on the way sparks are generated, they behave totally differently. For this particular tutorial we’re going to deal with creating an angle grinder effect ; so the things we need to concentrate are emission rate, adhesion to the grinder itself, and emission velocities. However, the spark itself has its own properties governing its shape and lifespan. More on that in the “Analysis of effect” section.