School me on cryo via acetone and dry ice please

Why not get a dewar and stick with the LN2? I read the OP as the welding supply only is hung up on the container choice?
 
Scaniaman said:
Why not get a dewar and stick with the LN2? I read the OP as the welding supply only is hung up on the container choice?
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Not sure I understand your comment. Dewar? Edit: I looked up a Dewar.....I gotcha.
Yeah, they say the Yeti jug is too hard to dribble LN into from their story. They said they end up with as much lost on the floor as they get into the jug. Its a Yeti 64 oz bottle with about a 3" opening the the top screws on to.
 
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I used a cheap cooler and alcohol. Something to keep in mind is that the more mass that needs to be cooled the more DI you will need. One of my first knives I did using AEB-L I did at a friend's using one of his quench tanks. It was 6"X6" steel tube and held several gallons. I think I used over 25 lbs, it might have been 40 even. Now I use a plastic cooler and just enough alcohol to cover my blades and I can get by on 5 to 15 lbs depending on how many blades I'm doing and how long it sits around. You want to make sure that you still have a slurry of unresolved DI.
 
Also I remember Larrin saying RH is not the only tell all for how a knife preforms. Of course blade grinds, knife geometry but toughness etc also come in to play. I'm like said above. This is hobby and sell enough or take money for expenses. But my friends and customers are loving the results so far.
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If you are using dry ice you aren’t cryogenic treating. Cryogenic treatment doesn’t start until the temperature is lower than dry ice can get you. Cold is still effective it’s just not technically cryogenic treatment.
 
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