St. David’s Students Learn About Prosthetics Jerry’s sales associate, Joe Harp, recently had the opportunity to talk to Mrs. Hardin’s art class about one of his passions... prosthetics! Using products supplied by Amaco, such as papier mache, flex wax, crea-stone and casting compound, Harp was able to explain the process of mold making. Students also had the opportunity to try on theatrical masks, which Harp had recently produced for a rendition of CS Lewis’s play, “The Lion, the Witch and the Wardrobe.”