dude.. i have a bong, me and my now dead brother used to smoke out of... some asshat broke it... i've tried everything... it's as good as gone.... (i don't remember who or where i heard this, allthough it was off here... windshield repair kits do not work...)

and if that glass didn't break after you got it hot with the blowtorch then cooled down again, i'm truely shocked.... i've spent alot of hours, and many many many empty glass alcohol bottles using a blow torch trying to turn them into bongs.... i've got it down to easy as helll to punch the hole in the glass (once it's glowing red hot you just take an ice pick and push through, then once it isn't quite so red anymore, move the pick slowly to the side, and it'll snap off all the excess shit...)

but once they cool it's a hit or miss type thing.. literally out of about 100 bottles heated, and holes punched through them, once it cooled, maybe 2 would come out ok... but even then it becomes so brittle, the slightest tape, cracks it completely... you need a kiln to slowly cool glass in... the rapid change in tempature makes it extremely unstable (once you put the hole in it you better step away, because if they crack, i'ts not just little cracks through the glass... this shit shatters and shoots out... can you imagine being sprayed with cigarette ash sized 500 degree + glass shards...)

it's not fun... let me tell you that lmao.. it hurts like a son of a bitch, and trying to rub it off does nothing, cuz it's glass... it cuts into your skin.. (yes i figured this out the hard way)

it's time ot gather some money and go get a better bong that replaces the thought of the old one... cuz theres nothing you can.. or atleast nothing you can that looks clean... you can super glue it or use epoxxy, but that looks like shit.. and who wants to hang onto a bong with crust and diffrent colors all over it? (as in diffrent colors, that dried super glue white running through the cracks, or epoxxy which is usually grey)