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Old 06-08-2019, 06:15 PM
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Pete VanderLaan Pete VanderLaan is offline
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So, this thing has evolved from the 2013 class

When Mark came and did the team teaching back six years, I was brought this curious little crucible by Joe Pfeiffer which did odd stuff. If one melted in it and cooled it, glass did not stick, or so claimed the purveyor. Further, if you threw the mess in ice water, it did not crack, nothing-.

The person with the stuff was not finding market anywhere and it was brought to me. I really had a lot to do and so it went on the shelf forever but remained there. Years passed and I lost the paper work for it until a few weeks ago when MB surfaced with it and dropped it on my laptop and I was stunned. I assumed it was gone forever but it was not.

So, armed with the document, and I still had the little crucible with the glass tha falls out of it on demand, I started looking hard for source. The domain name was gone, expired , not reregistered. The product is a combo of crazy claims and some science yet I had the pot and the sample.

So, I called Mark and he asked me to take the crucible and put cullet in it and run it up to 2000F which I did. Then we shut down and about seven hours later, I took the pot out of the gloryhole at around 500F and checked it out. The stuff was cracked in half in the pot which I attributed to poor annealing yet when I tapped it upside down. the glass indeed fell out in two pieces. It wasn't completely clean but it was really hot and I attribute that to expansion.

So Monday, the pot goes off to Corning for analysis. It's not a crucible formulation based on the Na/Zr/po but it sure could be a mold release. It has occurred to me that the chemical formulation I have , ( a NA/zir/ po/ might be a wash as to a release but at this point, who knows. Mark has the contact to get an analysis through his grant.

I love this crap.

Is that not totally cool? For me, it beats the snot out of pumpkins.
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Old 06-08-2019, 07:37 PM
Josh Bernbaum Josh Bernbaum is offline
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That is cool. I suppose you'd know if it were platinum or not, but that reminded me that I think I remember hearing that was one of the characteristics of a platinum crucible?
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Old 06-08-2019, 09:24 PM
Eben Horton Eben Horton is offline
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Fascinating. Good luck unlocking its secrets
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Old 06-09-2019, 07:47 AM
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Pete VanderLaan Pete VanderLaan is offline
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Quote:
Originally Posted by Josh Bernbaum View Post
That is cool. I suppose you'd know if it were platinum or not, but that reminded me that I think I remember hearing that was one of the characteristics of a platinum crucible?
***
Well, no, it's not. I kind of doubt that someone would have given me a platinum crucible. A 24K gold one maybe, but platinum, no, that's pricey stuff.

But it will be most interesting to see what it in fact is.
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Old 06-09-2019, 07:46 PM
Eben Horton Eben Horton is offline
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Gonna stick my nose out there and say that the pot has a lot of this in it.
https://en.m.wikipedia.org/wiki/Boron_nitride
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Old 06-10-2019, 08:07 AM
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Boron nitride is used in most mold releases currently. The pot is ceramic in nature. Mark seems to think this may not work out as well as we had hoped. The time lapse may be really long.
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Old 06-10-2019, 09:48 PM
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So are you now going to test the "heat it up and dunk in water" to see if it won't crack?
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