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  #11  
Old 05-11-2020, 06:25 PM
ROSIEonFIRE ROSIEonFIRE is offline
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Thanks for your suggestions everyone! I'll keep you posted on the project and it progresses
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  #12  
Old 05-11-2020, 06:45 PM
DirtyCoconuts DirtyCoconuts is offline
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Cant wait...also remember curved surfaces do better with smaller tiles
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  #13  
Old 05-12-2020, 09:26 AM
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Ray Ray is offline
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Quote:
Originally Posted by DirtyCoconuts View Post
They are random and the farther apart the holes are the less likely that two hidden stress fractures will intersect and cause a structural failure.

Same in glass, the closer the holes the more likely the vibrations will break the work

---------- Post added at 01:52 PM ---------- Previous post was at 01:50 PM ----------

And sorry, I misspoke. I mean 45*
Such pots are slip-cast and sintered. Unless they are not cooled properly after firing, the likelihood of there being restrained stresses is minimal. Beside, the extreme porosity of such a body means that a stress crack with be relieved over a very short distance and won’t propagate.

Unless you’re dealing with tempered glass or a vase that wasn’t annealed properly, the breakage between two closely-spaced holes is due to vibrations and the brittleness of the material, not stored stress.
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  #14  
Old 05-12-2020, 09:33 AM
DirtyCoconuts DirtyCoconuts is offline
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Ahhh I see the miscommunication, I was using a term of art indelicately

I completely agree. It is all the vibrations and user error. I just meant to say that the farther apart the holes are the less chance of breakage

I had forgotten the stored stress issue and annealing as in glass (and I assume clay too since it is super heated it has to be slowly cooled too) and I was saying stress more figuratively.

You are absolutely correct in your statement
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