Me and a buddy recently went on a road trip to the south of the states. We smoked doobies on the way. When we ran out of papers my friend broke out his glass hammer. Instead of using a screen he had a tiny jack he used in place of the missing screen. I tell you what, the shit rocked. No taste of metal/brass nor did we have trouble with cloggation, nor did we swallow ash. I suggest the use of tiny jacks in place of screens. I am suprised that they don't sell jacks on this site. I got not only a glass colored pipe collection but a jack collection as well.... smoke on!!!