best way to make a homemade bong airtight?

Title says it all, whats the best way to make a homemade bong airtight?

electic tape is decent but if you can weld or melt anything together itll prob be better

caulk works great...

I've been using high-temp hot glue. As long as you aren't ripping it at about 2 rips per min (RPM ), it should have enough time to cool down and keep solid and prevent you from inhaling any glue vapors.

I've got a homemade bong that I made when I first started. It's a 20oz Mountain Dew bottle that I broke a hole in it just below the half way point, and stuck a hollow pen through. Hot glued it to the bottle, then glued a bolt to the end as a piece to screw my bowl into. Once it dried enough to hold its' own, I let it sit for about 48 hours in a cool, dark, place (my closet lol), and have only had a problem with it once.

That particular problem, I had a group of 5 (including me) all ripping from it one after another (was a quick bowl before we drove to the movies). The bolt ended up melting off. Mind you, my bowl can usually get a good 10-12 hits from the bong, and we managed to cash it in about 5 minutes.. Between me and my usual smoking buddy, never had a problem after 6 months of use.

Sorry for rambling .

I actually use hot glue on all of my home-made pieces as well. Make sure you use enough to be sure it has an airtight seal it it holds so well. It can melt though, so don't let your piece get to hot, or don't use hot glue where your piece will raise in temperature. Also, it's easy to remove if you wish to take your piece apart. The glue is very pliable and can easy be removed with fingers.

One thing I like to do to test for it being airtight is to cover the carb and the stem hole with my finger(s) and suck. If you can keep sucking for a while, you still have some air leaks. If the piece feels like it's beginning to suck into itself, or you simply cannot pull anymore, then it's airtight. Seems to be the simplest method for me.

*edit*: Just tried it on my piece, it seems that blowing into it from the mouthpiece, while covering the carb/stem, seems to be easier to check for leaks. I like to do double layer on the glue either way, first layer, let it cure for 24 hours, apply a second layer, let it cure again for 24-48 hours and you're golden!

It helps if your stem hole is as close to stem size as possible. Easy to do if you just spin a knife to make the hole and keep checking if the hole's big enough. Then I use hot glue to seal it up. If you're careful, cause hot glue sticks good to flesh until it cools, you can just heat up the glue on a knife with a lighter instead of carrying a hot glue gun around.

Industrial strength water proof sealant.

I have no idea where it came from. i found it in my garage one day, but it works great.

u guys need to go to your local smoke shop the bongs they have there are really worth the money and the high

Yea, but not everybody is 18 or has a ton of money to spend . I've gone to the smoke shop a few times, first time I grabbed me a metal pipe (great for mobility), second time I grabbed me a glass pipe. Looked clear/whitish at the shop, got home and it was pink. Good news is that after some use, it turns a deep orange .

I've gone to a few others, but just haven't found a bong that has caught my eye yet. So, until I find a nice glass bong, I'm perfectly happy with making homemade pieces, that can often be very unique. For instance, I'm currently building a nice large bong (roughly 140oz total) that will hopefully filter the smoke 2-3 times if built correctly. Something to be proud of

I never have the money or materials around the house to make a homemade one. The only thing I've smoked homemade was from an apple.

Yeah, I don't feel like spending 60$ for a decent bong. I've bought a 20$ bong in the past but it just broke, and I'm perfectly content with my new 2-filter homemade piece

me too i love my double perculated bong

I melt-fit most of my parts, it tends to work for me. For parts that that isn't feasible on, I'll use teflon tape to get a proper seal, and secure with duct tape. I use glass bowls in all of my stuff, for the heat-resistant properties and quality of smoke. Call it cheating, but whatever. It means I don't worry about parts being heat-sensitive, and I like that. Simplifies things.

Silly putty

I like my little water bottle bong, with a fresh water bottle every time To make it airtight I just chew up a piece of gum and smush it around the hole. good for those of us who can't find our way around a hardware store and/or don't have the patience.

You want the quickest, cheapest method and probaly better and less fiddly,

1. Get a candle (birthday cake candles are usually the best)
2. Light it!
3. Start to melt the wax under the flame
4. Let the wax drop around the places that need to be sealed
5. Check if it's airtight from posts above
6. If not keep repeating step 4 till happy

best part is if you ness it up run it under cold water and pick it off, always worked for me and my mates

Peace out baz!

fill your mouth with smoke from a bowl or cig then cover female stem piece and/or carb
then blow in any leaks will now be visible
i like to use hotglue or electricle tape im outta hot glue
im anal about my air seal i like to be able toproduce a vaccum in a bong when everything is plugged up

I just made a really cool double chamber bubbler all afternoon. the absolute best way to make it airtight is to take a candle and drip wax all around the piece you need to seal. then wrap it in electrical tape, it lasts so much longer than just electric tape

Electrical tape is most deffinetly your best choice if cost is an issue.
For about two bucks you can get a whole roll of it. Just wrap it around wherever you want to cover, make sure its tight.

The GEL kind of super glue can work great as long as its never heated up.. So dont use this near a bowl.

Puddy can work great also.