ok so i saw some videos online a few months ago of nice glass bongs with stems that came out and acted like a carb. i had never seen this before so i thought maybe i could build something like that with random crap i had so i took apart an iron pipe i made from plumbing section, and some various unrelated copper piping. and the bowl and stem fit together and could be pulled up to change airflow but i needed it airtight and the only thing i had on hand was duct tape... so obviously i know how terrible this is, but i never got the chance to try it and i feel like i should despite copper and ducttape an plastic. p.s. the reason for the battery was because the stem and bowl were tons heavier than empty plastic bottle or even with water, so i figured random off had counterweight, it was in arms reach
