sand off bottom of vessel strip bulb with [dig in like drill between the bulb glass and screw cap margin]peel off in loop with tweasers making a handel in process loop in nicrome wire hook to rherostat entrain fish pump duck valves if necessary positive pressure will push the smoke or make resivor with bag place on rubber mat it be necessary to likewise >>>lift this bubble to refill and weight if necessaryjust like unscrewing the comercial cheap ones the volcano is allrigh i suppose t rocket or something before takeoff I just want mine pressurized and on tap put a meter in the to measure pressure so you'll know hen to hit it so it don youd pay ho much for that? how much fun to build? my most awsome pieces are hand built:sunny: maybe something like a gravity bong to measure pressure ya wana tap it? think your design unique share your technology guesses ideas here................... CRITIQUE TIME: