Quote:
Originally Posted by 8EL
Forgot to mention I used to use liquid Nitrogen (boils of at -320 DegF at sea level) to chill the inserts and they would drop in mostly on their own. Liquid carbon dioxide would probably work and is not as cold about -80 DegF so is a little safer to handle.....But either one will immediately cause frost bite or freeze your eyeball....wear a face shield Bubba.....
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We had a dairy farm and my dad did artificial insemination and we had a tank of liquid nitrogen, my brother and I would put different things in it to see the results . Rubber hoses after being dipped would be like ice in seconds and shatter when struck on the floor. I just watched a bus/motorhome video where the mechanic was using it to install bearing races in rear hubs on a large provost. He had a what looked like a baking pan placed in closed cell foam and would pour the liquid over the large race and it would boil, when it stopped boiling the race would free fall into its seat and as it warmed up was solid tight. Really cool stuff.
Forgot to add,,,, he would pour the stuff back into the storage bottle and reuse until it wouldn’t work anymore. I can’t remember the shelf life of the stuff or if I ever knew it.