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Tips, Techniques, and Questions -- Technical questions or tips

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  #1  
Old 2017-10-01, 6:42am
SWCreations SWCreations is offline
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Question How Long Does It Take To Crack

Question. How long does it take beads to crack if they are going to crack? I noticed on occasion a bead will make it out of the kiln okay to later crack. Not sure if I got it too cold or if the combinations were incompatible.
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  #2  
Old 2017-10-01, 7:28am
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echeveria echeveria is offline
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It can take minutes, or months, unfortunately. I have had beads that I thought were fine crack after weeks. I bought some back in the day from Austin Hamilton on ebay, just to check them out. They cracked after a few months - just one of the many problems they had.

That is a lovely bead. Sorry it cracked.
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  #3  
Old 2017-10-02, 3:50am
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Have to second Kathy on this subject.

It might be possible to salvage that one by preheating in your kiln and warming it slowly in the back of the flame for a long time to get it up to melting temp.

You will want to put it on a mandrel with barely enough bead release before hand while it is cold of course.

It's gorgeous work.

Another choice would be to just hang it with some sort of cap on either end and wear it yourself knowing that it could break some day.
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  #4  
Old 2017-10-02, 9:11am
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Agree with Kathy and Phill about the timing. That is a gorgeous bead!!
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Old 2017-10-03, 2:04pm
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It's hard to say when they'll crack, if they are going to, because it depends on why. I do find heat related cracks show up almost immediately. Compatibility cracks can happen quickly, or take a really long time (guess it depends on how incompatible they are).
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Old 2017-10-04, 6:45pm
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I am guessing something is incompatible because my second bead cracked too. It took a few days out of the kiln. Sad
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Old 2017-10-05, 11:03pm
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I'm going to guess that is 96 frit under the clear? Could be why.

What's your glass combo?
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Old 2017-10-06, 5:18pm
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Quote:
Originally Posted by Ravenesque View Post
I'm going to guess that is 96 frit under the clear? Could be why.
V
What's your glass combo?
Good call! I have never successfully encased 96 frit with 104 clear.
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Old 2017-10-06, 8:21pm
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Aye, you have to keep the frit content down to less than 5% I think.

Oh and not to heavily concentrated on any one spot.

There have also been issues with some of the older clear glass just not wanting to play well.

I think ASK clear was a problem even with itself some half dozen years ago.
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