Stick with glass, grind off the edges with sand paper. It doesn't sag period. Drill holes in it for the air lines - silicone sealer for brass hinges. Much longer lasting and cleanable. Best of all it doesn't sag. Charles H -- http://www.InkForYourPrinter.com for all your hard copy needs since 1987. --------------- See http://www.aka.org/AKA/subkillietalk.html to unsubscribe