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Glass carboy with hole on top

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With a better bottle, one could hang it upside down, hang something heavy from the neck, partially fill it with really hot water, and stretch it out so the slope is far more severe. Better Bottles are shrinky dinks... heat them and stretch them any way you want. Look what my friend did to 2 of his:

jons-melted-better-bottles-56250.jpg

Yeah, the bottles are blow-molded from a bottle blank, the same way a soda bottle is. If you heat 'em without any support from the inside, they attempt to shrink back to their original blank.

The way to make this work is to maintain a bit of pressure in the bottle while heating it. Some sort of fitting which would allow you to feed in compressed air would be necessary. Heating the bottle evenly so that it conforms to its new mold would be the PITA. It isn't something a guy is going to be able to do with a heatgun and no fixturing.
 
Yeah, the bottles are blow-molded from a bottle blank, the same way a soda bottle is. If you heat 'em without any support from the inside, they attempt to shrink back to their original blank.

The way to make this work is to maintain a bit of pressure in the bottle while heating it. Some sort of fitting which would allow you to feed in compressed air would be necessary. Heating the bottle evenly so that it conforms to its new mold would be the PITA. It isn't something a guy is going to be able to do with a heatgun and no fixturing.

What about placing the bottle upside down in the new mold, "attach" a hose to the neck and pump near boiling water into the bottle?
 
Read entire thread. I laughed. I cried. Now my gears are turning.

15 gallon
ForumRunner_20130925_222935.jpg


5 gallon
ForumRunner_20130925_222952.jpg

Oh, and I have a full set of glass hole saws from my past obsession... fish tanks.
 
Read entire thread. I laughed. I cried. Now my gears are turning.

15 gallon

5 gallon

Oh, and I have a full set of glass hole saws from my past obsession... fish tanks.

Those might actually work! Would love to see what you could do with them. On a side note what does your name mean?
 
His car is fast

To be honest, I think I should change my name to "wasfast4door" considering my car hasn't been on the road in 8 yrs. It's just the name I've been using for a long time. I have a Mitsubishi Galant VR-4, number 1195/2000 made that year for the US. It was fast. Speed takes money and time... I'm liking homebrewing much more these days.
Back on topic...
I think the necks of either of my bottles (are they called demijons?) Are much steeper than a carboy. 5 gallon one seems like thinner glass tho and the 15 doesn't fit in my ferm chamber. I've been trying to figure our what to do with them since SWMBO brought them home from a yard sale last year.
 
Denny said:
Be very, very careful. Generally the glass in a demijohn is thinner than a carboy.

That's the first thing I thought my buddy has three of the 15 gallon demijohns and I won't even touch them because of how thin they are. I'm pretty sure you aren't suppose to move them full without that special carrier.
 
Be very, very careful. Generally the glass in a demijohn is thinner than a carboy.
Denny is right, these are thinner glass. The green one seems really thin as it's quite light. I'm not sure that I need another project in my life right now (I am at work, sober, thinking more clearly than last night). I will hold off for now. I think it would work though. I've drilled many holes in fish tanks with 3/16" glass with no issues. Slow and steady wins the race.
 
Denny is right, these are thinner glass. The green one seems really thin as it's quite light. I'm not sure that I need another project in my life right now (I am at work, sober, thinking more clearly than last night). I will hold off for now. I think it would work though. I've drilled many holes in fish tanks with 3/16" glass with no issues. Slow and steady wins the race.

You got this! :cross: Whats the worst that can happen.:D Go home, drink some beers and then really think about how much of a man you are and get it done. Don't forget to live stream on youtube with a link posted on here.:fro: (seriously probably a really bad idea. I have seen first hand what a carboy can do to people and it has kept me from touching glass in brewing) What am I saying? Don't want to be a nay say'er! DO IT!!!!!:D
 
You got this! :cross: Whats the worst that can happen.:D Go home, drink some beers and then really think about how much of a man you are and get it done. Don't forget to live stream on youtube with a link posted on here.:fro: (seriously probably a really bad idea. I have seen first hand what a carboy can do to people and it has kept me from touching glass in brewing) What am I saying? Don't want to be a nay say'er! DO IT!!!!!:D

Nice. Can I send you the bill for the ER visit requiring stitches?
 
Nice. Can I send you the bill for the ER visit requiring stitches?

You are gonna have to wait till Obamacare kicks in. But stitches would be a blessing. The call I went on was a lot more than stitches. The poor schmuck was damn near dead when I got there and spent quite some time in surgery. From what I heard he still has issues opening and closing his hand. I would figure that fish tanks are a hell of a lot easier to work on given the thickness compared to a demi. Gotta be tough with all those little kids tapping on them.
 
I wonder if the OP is ever coming back to this thread, or brewing for that matter.......
Best I can tell, he was last here on sept. 11th.
He did say he was busy with life.
I'll just be patient and wait for his results.
 
subbed...very interesting concept. I'll have to give this whole thread a read on the metra this afternoon after work.
 
Man, this is a great idea! And as far as all the negativity goes, "a hater's gonna hate", especially when they've spent 500 bucks on their setup and you achieve the same result for 60! As far as the sides not being steep enough, just give it a shake or swirl every few days. Convention is the enemy of progress
Good job!
 
Man, this is a great idea! And as far as all the negativity goes, "a hater's gonna hate", especially when they've spent 500 bucks on their setup and you achieve the same result for 60! As far as the sides not being steep enough, just give it a shake or swirl every few days. Convention is the enemy of progress
Good job!

Have you not been reading this thread? It's not conjecture...hundreds, maybe thousands, of people have tried it. I have personal experience with it. It doesn't work like a conical.
 
Man, this is a great idea! And as far as all the negativity goes, "a hater's gonna hate", especially when they've spent 500 bucks on their setup and you achieve the same result for 60! As far as the sides not being steep enough, just give it a shake or swirl every few days. Convention is the enemy of progress
Good job!

Man this is in poor taste, did you not get the notice of the memorial?













:p
 
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