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BOTTLE CRACKING

Posted By 1dram 10/30/2019 11:44:21 PM
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1dram
 Posted 10/30/2019 11:44:21 PM
Blue Hybrid

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Last Active: 10/30/2019 11:31:47 PM
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HI ALL JUST WONDERING WHAT U WOULD CLASSIFY AS A BOTTLE CRACK CAUSE SOME BOTTLES HAVE CRACKS IN THE NECK BUT THEY DON'T GO THREW OR LET WATER OUT SO TO SAY ITS CRACKED WOULD IF HAVE TO GO THREW AND LEAK OR WHAT DO YOU ALL THINK
REMOVALMAN
 Posted 10/31/2019 9:09:16 AM
Blue Hybrid

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COULD BE A STRETCH CRACK DURING MANUFACTURE

COR!!!! WHAT A CRACKING IDEA !!!!
NEWMAN1645
 Posted 10/31/2019 3:28:51 PM
Blue Hybrid

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In my eyes a stretch crack is still a crack.:)

John.
REMOVALMAN
 Posted 10/31/2019 5:17:01 PM
Blue Hybrid

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NEWMAN1645 (10/31/2019)
In my eyes a stretch crack is still a crack.:)


OH!!! JOHN , DIDN,T ASK YOU ABOUT THE WOMEN YOU KNOW
oldpenny1000
 Posted 10/31/2019 5:41:16 PM
Blue Hybrid

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Last Active: 11/18/2019 3:13:09 PM
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I have noticed a lot crackling around necks of mainly Green poison bottles. Not noticed much on anything else.

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BOTTLE HUNTERS
 Posted 10/31/2019 7:22:13 PM
Blue Hybrid

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Striations are not cracks, most cracks are near enough water tight, considering how tight they are, done on a common sense / buyer/seller basis offer up what you see in photos, up to buyer to decide, I can tell most cracks over manufacturing errors, firing cracks, so on,

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NEWMAN1645
 Posted 10/31/2019 7:25:08 PM
Blue Hybrid

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Oh Bugger it...no thats not right either is it Johnny:D

John.
ex-cavator
 Posted 11/4/2019 8:39:49 PM
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Tiny little cracks in the necks are usually caused by temperature and pressure changes in the region of stress lines in the glass where it has not been fully annealed during manufacture. the problem is that, although they may be small and not leak now, further changes in temperature and pressure can sometimes cause them to 'run' and develop into large cracks. Often these small stress fractures are caused by folk being too eager to clean the bottles when first dug, putting them straight into water that might be of a slightly different temperature than the bottle. the correct way is to let the bottle rest at a steady outside temperature for a good 24-48 hours after digging, and then to clean in water that has also stood at the same temperature for a reasonable length of time to equilibrate. The bottles have been waiting for 100+ years to be cleaned back to their former glory, it's just a shame their integrity is compromised because some impatient sod can't wait another day to clean them :crazy:

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Cornish_Collector
 Posted 11/7/2019 11:17:14 AM
Blue Hybrid

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Although I tend not to buy bottles with cracks, in my experience I've never had a crack 'run' or generally get larger. I know there is anecdotal evidence of bottles with tiny cracks growing into huge splits overnight but I think this must be a rare occurrence?I would be interested to hear anyone else's opinion/experiences.


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ex-cavator
 Posted 11/9/2019 2:01:58 PM
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I've had a few go over the years, usually not a slow and silent run but an audible 'crack' while you're sitting there watching telly, prompting a nervous perusal of the shelf to see which one it was, hoping it wan't that all important 'one-off'.

Unfortunately I've got a few 'one-offs' with stress fractures, in all cases bought from other diggers who were rather too eager to get them clean and sell them on after digging.

Same goes for porcelain items - pot lids & the like - that over zealous digger / dealers are all too eager to dunk in acid to clean & don't take the time and trouble to flush out the residues that infiltrate under the glaze. As the moisture slowly evaporates and the remaining acid becomes more concentrated, it attacks the structure of the porcelain and may eventually cause it to crumble. Any porcelain item I buy from a digger goes in the toilet cistern for at least a month to dilute and leach out any potential acid residues with frequent changes of water ;)

WANTED: BANBURY ITEMS
glassware, stoneware, flagons, potlids -why?
I'll guarantee to beat ANYBODY'S price for quality items I need for my collection
PLEASE P.M. ME WITH DETAILS ;)



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