I was having a hard time cleaning my glass peice tonight... And as soon as I packed a new bowl I came up with the best way to clean. Soak it in iso alcohol like most everyone does... and then spray out the insides with a supersoaker! It's perfect, small jet of high powered water that can blast away even the stickiest resin.
but the trick is how to get the resin out with out ruining it (the resin i mean), that i dont know either.
I put in alcohol and sea salt and shake it all up. I dont care about saving resin because smoking that shit is nasty and it barely buzzes you.
That's what I use. I haven't saved resin in a long long time. In fact, I get a chuckle everytime my little brother and his friends come over to my house. I was cleaning out my bubbler one time and as soon as I was done two of his buddies go over to my sink and start gathering all of the black-gunk that hadn't washed away yet. Whatever floats your goat.
Or you could go to your headshop and ask for some pipe cleaners with metal fibers sticking out. Works the best out of anything.
i havnt smoked res in so long i use bongs/gravity/js now since i broke my pipe so i never smoke res i never got much of a high of it more of a headache high