Spn Posted Tuesday at 04:57 PM Report Share Posted Tuesday at 04:57 PM So I have this vitro but it has hairline cracks from the inside of the marble now this only had two on it. I do have others with a lot of hairline cracks.are these classes a fissure marbles? 1 Link to comment Share on other sites More sharing options...
Spn Posted Tuesday at 05:15 PM Author Report Share Posted Tuesday at 05:15 PM This is a different one but worse.no cracks from the outside of the marble. 1 Link to comment Share on other sites More sharing options...
Chad G. Posted Tuesday at 05:42 PM Report Share Posted Tuesday at 05:42 PM 26 minutes ago, Spn said: This is a different one but worse.no cracks from the outside of the marble. Fractures, probably happened during production ?? 1 Link to comment Share on other sites More sharing options...
Spn Posted Tuesday at 05:44 PM Author Report Share Posted Tuesday at 05:44 PM Ok thank you 1 Link to comment Share on other sites More sharing options...
Carowill Posted Tuesday at 08:10 PM Report Share Posted Tuesday at 08:10 PM My understanding is that these are annealing fractures that happen if the cooling of the marble isn't just right after coming out of the kiln. 1 Link to comment Share on other sites More sharing options...
Chad G. Posted yesterday at 02:11 AM Report Share Posted yesterday at 02:11 AM This one wasn't in a kiln, Machine made. The hot glass was in a tank before it came out and was sheared off dropped and hit the rollers. Yes they are called annealing fractures, probably from cooling to fast ?? Not sure, maybe someone else will chime in ?? There are a few different reasons they get these fractures. Fried marbles is a term used to describe marbles that were heated after production then plopped in cold water fracturing the entire marble clear through, they were packaged and sold as "Fried marbles" many people did it at home, it used to be a thing I guess ?? https://www.instructables.com/Fried-Marbles/ 1 Link to comment Share on other sites More sharing options...
Spn Posted yesterday at 04:10 AM Author Report Share Posted yesterday at 04:10 AM Thank you for the info. 1 Link to comment Share on other sites More sharing options...
Chad G. Posted yesterday at 04:53 AM Report Share Posted yesterday at 04:53 AM 1 Link to comment Share on other sites More sharing options...
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