These shapes are cut out of Aluminum Flashing. (Get pieces from any company that installs siding). If you want any of the Files of the cutouts so that you can cut them out let me know.([email protected]) my email. This also applies to any of my videos. Please don’t comment on my not wearing gloves with the Lacquer Thinner. I have been washing the grease off my hands for the last 60 years with Lacquer and powdered cleanser. Plus I was in a well ventilated area.