Portable Gravity bong setup. Cut the bottom off of a glass bottle and then glued a 14mm to 18mm expander to fit the bowl. : r/StonerEngineering
Bottle Cutting - How To Cut Glass Bottles
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How to Cut Wine Bottles for Crafts: 14 Steps (with Pictures)
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Bottle Cutting - How To Cut Glass Bottles
So the idea is to cut the bottom off the glass bottle and sand it, then put it inside the hydro for a gravity bong. Should work well, just wondering if it
big glass jug 1 | i had to try cutting the bottom off this b… | Flickr
Bottle Cutting - How To Cut Glass Bottles
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