Portable Glass Gravity Bong. Cut bottom off of bottle and glued a 14mm to 18mm expander to the top to fit bowl. Doesn't leak and doesn't smell with top on. : r/StonerEngineering
Cfx gravity bong : r/vaporents
Whatdya guys think of my gravity bong?? : r/StonerEngineering
Water Filtered gravity bong failed attempt #1. Anyone else care to give it a try? Detail in comments. : r/StonerEngineering
First attempt at a diy stundenglass gravity bong : r/StonerEngineering
Gravity bong. The smoothest way to smoke that I've found, what's your favorite way? : r/trees
My homemade glass gravity bong. : r/StonerEngineering
Couldn't figure out how to roll a joint... so I made a gravity bong! : r/StonerEngineering
Nothing too complicated, D.I.Y Gravity bong? I had a bowl piece, but tin foil is functional if you're open to it. : r/StonerEngineering
Gravity Bong Blast-Off v.9 : r/saplings
5 Gallon Gravity Bong : r/trees
Gravity bongs are great : r/GravityBong
Any way to upgrade a gravity bong? : r/StonerEngineering
The Perfect "Percolating" Gravity Bong : r/trees
Homemade Gravity Bong : r/StonerEngineering
Me and my frients made a gravity bong/hot box! (x-post from r/trees) : r/StonerEngineering
Finally got around to making a reusable proper gravity bong piece. : r/StonerEngineering
How to make a gravity bong : r/StonerEngineering
My go-to diy whenever I travel: the mini gravity bong. : r/StonerEngineering
Homemade gravity bong : r/StonerEngineering
GravityBong
Thoughts on my design? It's a reusable, reversible waterfall bong, so that you don't have to refill it every time. Would it work? : r/StonerEngineering
Mold in gravity bong.. how to clean properly? : r/trees
Best way to smoke weed for $0 (homemade gravity bong) : r/trees
Homemade gravity bong bubbler, the ghetto way : r/StonerEngineering
My first homemade tool, a gravity bong! How'd I do? : r/StonerEngineering
