Handiwork

Just saw something in a movie and wonder if it really works or not.

Soak a piece of twine in alcohol... squezze off excess alcohol

wrap that around a bottle and lit it

let it burn for awhile.. then quench in water

causes the bottle to shear where the twine was wrapped.. nice straight edge

fact or fiction??

 

sounds dangerous. try it & let us know! watch your fingers though lol

 

dangerous???

you're kidding right

 

That sounds pretty good actually... you would just have to make sure not to soak the twine so much that the alcohol runs down the side of the bottle.

 

Yeah. This is how a lot of old blues players would make their slides. You're supposed to do it with a wine bottle. You dip a piece of twine in kerosene, wrap it around a bottleneck, light it, let it burn, and then dip it in ice water.

 

I know glass is "cut" in some applications by use of a hot wire and cold air jets, same idea.

I'm sure it could work, but I don't know if you would get an even enough flame. While letting it burn, the heat and flame will rise, heating the top end of the bottle as well. Once you put it in water it could just shatter the whole top of the bottle.

Plus most bottles now are molded, not blown, so the seam might carry the stress and just shatter the whole bottle.

Glass can hold a lot of stress too, I'd suggest wearing eye protection to avoid high velocity glass shards attacking your eyeballs.

 

Nah. You can tie that thing around the neck and then set the bottle upside down, that way the flames will go up. But I don't know. Seems like it'd still be pretty difficult to get an even line.

 

If the twine was around the neck, and the bottle upside down, the heat will still rise and heat up the glass above it. Unless you mean set the bottle on its side, only way I could see to do this with the least amount of unwanted heat transfer.

 

I mean that even though it's still going to rise, it'll be heating the bottom half of the bottle, as opposed to the top.

 

Either way, in order for this to work well you would have to focus the heat as much as possible on just the line where you want it to break/cut, or else your just going to shatter the whole thing.

 

Yeah. That's the point of the Kerosene. It'll burn really hot, and theoretically it'll do so around the part where it's wrapped. Plus, I think that when you dip the bottle in the cold water, you don't put the neck in, just the bottom part. That way, the neck isn't going to get the rapid contraction/expansion thing going on like it would if it went in the water.