Also called the Witch’s Sigil Wheel, this device probably was derived from the Rose Cross Wheel that is part of the Kabbalah of Nine Chambers system. The Rose Cross Wheel and derivatives use Hebrew Letters, which have been replaced with English in the modern wheel.
Creating sigils with this resource is as simple as choosing a keyword or statement of intention and then connecting the letters of this word/phrase with a continuous line. It works exactly like the “connect the dots” pages in children’s activity books!
Of course you will want to use your choice of magical acts or operations for creating the atmosphere and charging your sigil.