His work can include a wide range of materials and mediums but is based primarily on the creation of a cut image from a photograph, drawing, or other forms of visual media. In the removal of parts of the image, he is interested in the tension between what is there and what is left out, why those choices are made and not what they say, but where they lead.The cutouts are then reintroduced as prints, paintings, sculptures, and large scale murals. His curiosity and inspiration come primarily from written works and everyday experience, rather than from other visual artists. After establishing an idea he collects images, some not being cut until years later, which are then used to help investigate choices and insight new questions. For Casey, the process and the work are not separate entities but a process where each facet is of importance and worth heeding.