Cutting a Glass Bottle in Half With String and Fire

About: I am just a person who loves doing crazy and fun things... I always love to try to innovate when I can, and share any new discoveries I find... That is why I have recently started recording my shenanigans ...

Intro: Cutting a Glass Bottle in Half With String and Fire

In this video I will show how to Cut a glass bottle in half using String and Fire! Well actually it is more of Fracture but you get the point... This usually ends up with a pretty strait break line, and two half's...

String and a fuel source will be needed (will depend on how thick the string you use is...) as well as some cold water to dunk the bottle in.
Why would you wish to do this..? Well it's fun way to demonstrate thermal Shock for one...

But actually it can have a practical purpose also! The top half of the bottle (The Bottle Neck) makes for a perfect glass funnel for use with Chemicals like harsh acids that will eat through plastic an metal funnels with ease... As for the bottom half..?

Some hobbyist enjoy taking the bottom half and smoothing out the rim (Typically by melting) and making cheap a practical glasses out of them!! I however do not have the capabilities to do that today, but maybe I'll get the chance soon...

Anyways thanks for watching! And don't forget t subscribe if you like it :D



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5 Discussions


2 years ago

I have a couple bottles that are a beautiful blue that I want to use in some of my glass projects - this will be a great way for me to be able to get some straight strips from the bottles. I had problems trying to cut them with a glass-cutter.


4 years ago on Introduction

great ! i've been collecting wine bottles to do some kind of project. i am glad i found this, cause I am starting to look like glass wine bottle hoarder!

1 reply