Intro: Glados Ring
find the right size PVC tube that fits your finger and mark how wide you want your ring, i like my ring width at 3/4 inch
cut ware you marked it (WARNING PVC cutters don't cut straight)
make the yellow dot first, then make a black ring with the black sharpie around that dot, then make a oval, than fill in the rest
there you are, the Glados ring!