I would buy two different sizes if you made some.

...how do smoke detectors work?...
if its how i think they do, you could mount the sensor or w/e to the top and instead of a buzzer, it releases a little electronic switch to unplug the carb.:thumbsup:

if not, then i hope you find a way anyway

...ima go find a smoke detector
epicsoundz69 Reviewed by epicsoundz69 on . idea! just an idea for a novelty bong.... i dunno how to make it, but with our current technology i know i'ts more then possible... like have a bong, that automatically opens the carb at the precise moment... it does this by measuring hte smoke-air ratio next to the mouth peice.... it could even have settings for like lightweight to world champion.... Rating: 5