This video tutorial shows how to make a cool beer glass out of a beer bottle. This is also a great trick for cutting the bottle; forget the glass cutter or tricks with string and acetone. Just pour oil up to the level where you want the bottle cut off and place a red-hot piece of metal into it. Because of the great heat conductivity of oil and at the poor heat conductivity of glass, it will expand at the edge of the oil surface, cracking in a nice even line. Watch this instructional video and learn how to make a beer bottle glass.
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5 Comments
he so dropped the nail down the drain.. lol
ahh, i tried this twice and i didn't even get a crack! i don't know what i'm doing wrong; the metal was literally red hot, with a bit less than an inch of vegetable oil in a small glass bottle. any advice?
Runintoflowers: Sit the bottle on something cool or cold and allow the bottom of the glass bottle to get to that temp. Then pour in oil, then drop in nail. The rapid change in temp on the inside cause the bottle to want to expand but, the cold on the outside will keep the expansion from happening so it causes the bottle to crack and then pop. Please be very careful when using this method... it can cause your bottle to shatter and/or explode. Also... be aware that the glass will be very sharp so see if you can find a way to round the edges where the glass breaks (this will likely require some pretty intense heat or sanding equipment... be aware and be safe.
DO NOT use heat to round off the edges, as heat applied to one point of glass and not the whole causes structural stress, so unless you have a kiln and 12 hours, to properly reheat after to finish, then the stress could cause a shatter later on, possibly at any moment, from the structural abnormalities at a molecular level, and glass is one of the most unforgiving structures when it comes do point stress or abnormality (glass doesnt snap it shatters ets)
use sandpaper that's labelled suitable for metal, fine grade, takes the entire edge down a bit and removes any latent heat stress points generated from the first stage of heating and cracking, and repeat with the base just to take that risky heat-cracked edge away
WEAR SAFETY GOGGLES OR SIMILAR WHEN DOING ANY OF THIS PROCEDURE, BE SMART! and enjoy your new glassware
Are you a company or an institution? Do u train people to make glass in Hungary? Please enlightening me. Thank you.
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