ELSA KERSCHNER/TIMES NEWS Deborah Hamburger, a teacher at Dieruff High School, teaches paper making during the Dec. 1 open house at Lehigh Gap Nature Center. She said it was like wasps make paper by chewing wood. They were using cotton fiber but it can also be made from daylilies or blue jeans. Aiden Sell uses a screen to pick up a layer of cotton fiber from a pan of water.