crown caps

Discuss making up beer kits - the simplest way to brew.
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pongobilly

crown caps

Post by pongobilly » Tue Feb 13, 2007 6:44 pm

can you re use crown caps for glass bottles

tubby_shaw

Post by tubby_shaw » Tue Feb 13, 2007 7:18 pm

The simple answer is no :(
The complicated answer is no because the action of crimping the cap and then removing it will set up stress fractures (commonly known as metal fatigue) in the metal weakening it and so it would not seal.
You would also have trouble opening out the crimp again so that it would fit the bottle.
If you are looking for a cost effective bottling solution buy 1 litre PET bottles of "budget" lemonade from the supermarket. These can be used over and over again :)

pongobilly

pet bottles

Post by pongobilly » Tue Feb 13, 2007 7:33 pm

does using plastic bottles cause any difference to the beer, surely by re using the screw tops they loose there seal, because you break that ring thing when you open them dont you

pongobilly

Post by pongobilly » Tue Feb 13, 2007 7:37 pm

how on earth do they work

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Andy
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Post by Andy » Tue Feb 13, 2007 7:37 pm

pongobilly wrote:how on earth do they work
Errrrmmmm..... :roll:
Dan!

tubby_shaw

Re: pet bottles

Post by tubby_shaw » Tue Feb 13, 2007 7:45 pm

pongobilly wrote:does using plastic bottles cause any difference to the beer, surely by re using the screw tops they loose there seal, because you break that ring thing when you open them dont you
In the short term no, the ring thing that you break when you open a bottle is only an "Anti tamper" seal that shows whether the bottle has been opened before. The actual seal is formed by the lip on the neck of the bottle pushing up against the soft plastic pad inside the cap. Long term storage of beer in PET bottle can be a problem as they are O2 permeable.

kt88man

Post by kt88man » Tue Feb 13, 2007 8:16 pm

DaaB wrote:I think what Andy meant is they push on in place of the cap :lol:
Like this:

Image

I've found they don't give a totally airtight seal. The seal is better on some bottles than others. ( Maybe I should have used red ones... :wink: )

norman

Post by norman » Tue Feb 13, 2007 8:38 pm

I have used the red ones,and haven't had a gas tight seal yet.the beer was always flat.I have tried numerous types and shape of bottle without any success.

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Garth
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Post by Garth » Tue Feb 13, 2007 8:47 pm

As I bottle all my beer, and being a bit of a tight wad, I thought about using those re-seals as it would cut the cost slightly, but as Pauls picture shows it looks like they are only good for sealing a beer you don't finish, ........a problem that I never encounter.

Just buy the crowns, they're only work out a 1p-2p or so each adding approx 40p to a brew.

chopperswookie

Post by chopperswookie » Tue Feb 13, 2007 9:08 pm

i use PET pop bottles but i get the whole faimily to collect them for us, never had an issue. its a bit like re-cycling saving the earth while enjoying a brew. however some of the cheaper brands ie Spar own make Lemonade, repeat spar own make lemonade, the screw doesn't always tighten again once its been used. had to chuck three litres of Large-r.

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