Anthony San Miguel
My knife steel options have opened up even more. I got this 5 foot cryo chamber. My friend suggests that I cut it because it's waaaay bigger than I need. I'm not going to do ANYTHING to it until I become thoroughly familiar with it and cryogenic treatment. Click image for larger version - Name: IMG_20160423_205121.jpg, Views: 13, Size: 1.81 MB Click image for larger version - Name: IMG_20160423_205237.jpg, Views: 11, Size: 1.83 MB
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jmccustomknives
That looks like an 80 liter dewar.  They have an inner and outer chamber separated with insulation and a vacuum.  They also have tubing running in that area between for pressure control. These containers are for the transport and storage of cryogenic gasses (like liquid Nitrogen).  If you cut it you'll ruin it.  You should also know they sell for 2-4K.

Been filling these for 20 years.  lol.

Rule #10;  "I can make that" translates to; "I'm to cheap to buy it new."

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Hank Rearden
I just saw a set of commercial knives with the stamp claiming "Ice Tempered". I though Hum. What the.... Can this be true? If so it brings a new discipline to Bladesmithing. 
code[Maglio.gif]  Keep the fires burning hot!
2020 ABANA Conference in Sarasota New York. June 3rd. through June 6th. Plan now!
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Anthony San Miguel
jmccustomknives wrote:
That looks like an 80 liter dewar.  They have an inner and outer chamber separated with insulation and a vacuum.  They also have tubing running in that area between for pressure control. These containers are for the transport and storage of cryogenic gasses (like liquid Nitrogen).  If you cut it you'll ruin it.  You should also know they sell for 2-4K.

Been filling these for 20 years.  lol.


What you're describing kind of sounds like his description of it's inner parts but he was suggesting cutting it and using its core along with a smaller, more manageable part of the chamber.

I admit that I don't fully understand what he meant yet, that's why I'm not going to do anything to it until I'm thoroughly familiar with it.
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jmccustomknives
The core is just a stainless steel vessel.  Use this to transport your Liquid Nitrogen to and from the supplier.  There's other containers one can use for the cryotreating.

Rule #10;  "I can make that" translates to; "I'm to cheap to buy it new."

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Anthony San Miguel
After your explanation about what the unit is what he was telling me makes a little more sense. He called me Friday evening and told me he was cleaning what he refers to as "the yard" and said that he had something I might be able to use. Keep in mind that at one time he had a lot of these units so it wasn't that big of a deal to him to cut it and use it as a cryo chamber the way he was describing, even though I still don't fully understand all the details of exactly how I would make the conversion he was suggesting.

So they sell for 2-4k? Wow! The only thing he told me was that these units are expensive when we were loading it into my Tahoe.
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