I have a glass piece. I use isopropyl alcohol with coarse sea salt.
1) Fill it up, let it soak. Overnight would be nice.
2) The next day pour coarse sea salt in, it doesn't dissolve.
3) Plug both holes with your fingers or hands and shake vigorously.
4) Empty and rinse thoroughly.
5) Fill with snow or shaved ice and a little water. (preference)
6) pack with flower, top with kief
7) rock and roll.
@artmann That's about it really mate simple guide lol. Nice 😉
"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.”
― Mark Twain
@artmann I don’t clean my bong or my barbie 
.
Actually, I use my ultrasonic cleaner with a little dawn and some very hot dihydrogen monoxide.
15 mins, clean as a whistle.
Honor is simply the morality of superior men.
Put in a couple of ounces of isopropyl, add about a teaspoon of rock salt, plug the openings with your hands and shake a couple of minutes. rinse with warm water and then some water with a few drops of lemon juice to eliminate spots. It's about a 5-10 minute job with a basic bong and it will look good as new.
Random acts of kindness make the world a better place
I used to have an ultra-sonic cleaner for airbrush and tech pen parts. Never considered it for bongs.
Will just about any salt work for this? And do y’all rinse your glass ware with anything after the isopropyl?
you dont need salt, but it helps. Just iso and a good sake is usually plenty to clean it 
Then rinse the bong out with water after to make sure you dont breath in and fumes from the iso. Very easy to do it
"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.”
― Mark Twain
I have to say this. I'd wager being the person who doesn't clean his bong enough to the point I had black calcium build up on the glass.
I got it back to new by soaking it in a product called CLR clear for an hour then wash the fuckery out of it due to it not being a product you want a residual taste from lol
"There I go.
E-type flow."
@improper_weed_viking yeah that clr is not the best thing for you lungs lol it would strip 8 years of rust off a tap in 5 minutes though so potent stuff. I use the iso and salt because once you rinse with warm water it just evaporates clean with no residue.
I feel like a, like a slice of butter... melting on top of a big-ol' pile of flapjacks... yeah.
@bubblehok it was an extreme measure for an extreme situation lol and not one I'm going to revisit anytime soon. Triple rinse with boiling water and 2 more triple rinses just to be sure and I could still sniff the shit lol glad to see other hints though so I shouldn't have any reason to go down that route again lol
"There I go.
E-type flow."
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