This tutorial shows you how you can make sun rays in Adobe Illustrator, I'm using the CS3 version. Before you start make sure you set your Fill. The Stroke Weight controls how long the "rays" are. The dash field controls how thick the "rays" are. the gap field Ray effect in Illustrator. Use the screenshot below to better understand this step. light rays tutorial . You can make your vintage sun rays really unique by playing. In this tutorial you will learn how to create sun rays in Adobe Illustra tor, the fun and easy way without some rotation and doing some math. In today's tutorial, we will find out how to create vector sunbursts by using The number of copies is the total number of rays minus one ray.