... in a wide selection of colors) Acid-free cardboard or matt board is generally available at framing or art supply stores. Acid-free refers to a high-quality, long-lasting, and PH-balanced paper ... aspiring artists of all ages, as well as home schooling, academic and recreational fine art educators. 6 PAGES – 8 ILLUSTRATIONS Published by Hoddinott Fine Art Publishers, Halifax, NS, Canada, ... of acid-free cardboard or matte board, wide tape (duct tape is great), a sharp knife, and a straight edge or long ruler (such as a T-square). This project is recommended for artists and aspiring...